Question 1

Solve the problem.
-Your electrical bill states that you used 870 kilowatt-hours of energy in September. Determine your average power use, in watts.

Accepted Answer

A) 1329.2 watts 
B) 1208.3 watts 
C) 1169.4 watts 
D) 1450 watts 
A) 1329.2 watts 
B) 1208.3 watts 
C) 1169.4 watts 
D) 1450 watts

Question 2

Answer the following question involving a conversion within the USCS system.
-A boat is moving at 48 miles per hour. What is its speed in knots (nautical miles per hour)?

Accepted Answer

A) 57.2 knots 
B) 39.7 knots 
C) 55.2 knots 
D) 41.7 knots 
A) 57.2 knots 
B) 39.7 knots 
C) 55.2 knots 
D) 41.7 knots

Question 3

Solve the problem.
-A trader bought a stock for $70 and then sold it for $80. He bought it back for $89 and then
sold it again for $99. How much did he gain or lose on these transactions?

Accepted Answer

He gained

Question 4

Evaluate.
-$\frac { 1 } { 2 } - \frac { 1 } { 4 }$

Accepted Answer

A)  $- \frac { 1 } { 4 }$ 
B)  $\frac { 1 } { 2 }$ 
C)  $- \frac { 1 } { 2 }$ 
D)  $\frac { 1 } { 4 }$ 
A)  $- \frac { 1 } { 4 }$ 
B)  $\frac { 1 } { 2 }$ 
C)  $- \frac { 1 } { 2 }$ 
D)  $\frac { 1 } { 4 }$

Question 5

Convert the temperature, as indicated. Round your answer to hundredths, if appropriate.
-$280 \mathrm {~K}$, into Celsius

Accepted Answer

A)  $6.85 ^ { \circ } \mathrm { C }$ 
B)  $106.85 ^ { \circ } \mathrm { C }$ 
C)  $- 117.59 ^ { \circ } \mathrm { C }$ 
D)  $206.85 ^ { \circ } \mathrm { C }$ 
A)  $6.85 ^ { \circ } \mathrm { C }$ 
B)  $106.85 ^ { \circ } \mathrm { C }$ 
C)  $- 117.59 ^ { \circ } \mathrm { C }$ 
D)  $206.85 ^ { \circ } \mathrm { C }$

Question 6

Solve the problem.
-Suppose that you have 10 white socks and 6 black socks in a clothes dryer. How many
socks must you withdraw from the dryer (without looking)to be certain of having a pair of
white socks?

Accepted Answer

The answer of Solve the problem.
-Suppose that you have 10...

Question 7

Evaluate.
-$\frac { 3 } { 4 } + \frac { 5 } { 3 }$

Accepted Answer

A)  $\frac { 24 } { 29 }$ 
B)  $\frac { 29 } { 6 }$ 
C)  $\frac { 12 } { 29 }$ 
D)  $\frac { 29 } { 12 }$ 
A)  $\frac { 24 } { 29 }$ 
B)  $\frac { 29 } { 6 }$ 
C)  $\frac { 12 } { 29 }$ 
D)  $\frac { 29 } { 12 }$

Question 8

Convert the common fraction into decimal form. If necessary, round to the nearest thousandth.
-$\frac { 19 } { 49 }$

Accepted Answer

A) 0.298 
B) 2.579 
C) 0.388 
D) 0.548 
A) 0.298 
B) 2.579 
C) 0.388 
D) 0.548

Question 9

Decide which of the two given prices is the better deal.
-The same kind of water is sold in two types of bottle. Which type has the lower unit price? Five 10-oz bottles for $2.30
Seven 12-oz bottles for $4.20

Accepted Answer

A) Five 10-oz bottles 
B) not enough information 
C) Seven 12-oz bottles 
D) equal value 
A) Five 10-oz bottles 
B) not enough information 
C) Seven 12-oz bottles 
D) equal value

Question 10

Convert the measurement to the units specified. Round your answer to the nearest tenth.
-2500 square yards to square meters

Accepted Answer

A) 2992.1 square meters 
B) 2090.3 square meters 
C) 2735 square meters 
D) 2286 square meters 
A) 2992.1 square meters 
B) 2090.3 square meters 
C) 2735 square meters 
D) 2286 square meters

Question 11

State how much larger or smaller the first unit is than the second.
-gram, milligram

Accepted Answer

A)  Larger by a factor of $10 ^ { 6 }$ 
B)  Smaller by a factor of $10 ^ { 6 }$ 
C)  Smaller by a factor of $10 ^ { 3 }$ 
D)  Larger by a factor of $10 ^ { 3 }$ 
A)  Larger by a factor of $10 ^ { 6 }$ 
B)  Smaller by a factor of $10 ^ { 6 }$ 
C)  Smaller by a factor of $10 ^ { 3 }$ 
D)  Larger by a factor of $10 ^ { 3 }$

Question 12

Convert the temperature, as indicated. Round your answer to hundredths, if appropriate.
-$90 ^ { \circ } \mathrm { F }$, into Celsius

Accepted Answer

A)  $104.40 ^ { \circ } \mathrm { C }$ 
B)  $50.00 ^ { \circ } \mathrm { C }$ 
C)  $32.22 ^ { \circ } \mathrm { C }$ 
D)  $58.00 ^ { \circ } \mathrm { C }$ 
A)  $104.40 ^ { \circ } \mathrm { C }$ 
B)  $50.00 ^ { \circ } \mathrm { C }$ 
C)  $32.22 ^ { \circ } \mathrm { C }$ 
D)  $58.00 ^ { \circ } \mathrm { C }$

Question 13

Carry out the indicated unit conversion. Round your answer, if appropriate.
-Convert a weight of 16 pounds into ounces; there are 16 ounces in 1 pound.

Accepted Answer

A) 320 ounces 
B) 128 ounces 
C) 256 ounces 
D) 512 ounces 
A) 320 ounces 
B) 128 ounces 
C) 256 ounces 
D) 512 ounces

Question 14

Solve the problem.
-A curved bridge rises over a canyon. The two endpoints of the bridge are one mile apart
horizontally. The bridge rises to a height of 353 feet above the horizontal. Approximately
what is the walking distance along the bridge, in feet?

Accepted Answer

The answer of Solve the problem.
-A curved bridge rises over...

Question 15

Decide whether the statement makes sense. Explain your reasoning.
-If you complete the four-step problem-solving process carefully and thoroughly, then you
will have no uncertainty about your final answer.

Accepted Answer

Does not make sense. The four-step proce

Question 16

Decide whether the statement makes sense. Explain your reasoning.
-I figured out the number of seconds in a week by multiplying 7 by 24 by 60 by 60.

Accepted Answer

Makes sense. @#LAT-DLM& , since all the

Question 17

Carry out the indicated unit conversion. Round your answer, if appropriate.
-A car is driving at 180 miles per hour. What is its speed in miles per minute?

Accepted Answer

A) 648,000 miles per minute 
B) 240 miles per minute 
C) 3 miles per minute 
D) 10,800 miles per minute 
A) 648,000 miles per minute 
B) 240 miles per minute 
C) 3 miles per minute 
D) 10,800 miles per minute

Question 18

Solve the problem.
-It takes you 84 seconds to walk from the first (ground)floor of a building to the fourth
floor. How long will it take to walk from the first floor to the 8th floor (at the same pace,
assuming that all floors have the same height)?

Accepted Answer

The answer of Solve the problem.
-It takes you 84 seconds...

Question 19

Solve the problem.
-A supermarket in Japan sells soy milk for 382 yen per liter. If there are 83.21 yen per dollar, then what is the price in dollars per quart?

Accepted Answer

A) $4.34 per quart 
B) $4.59 per quart 
C) $3.65 per quart 
D) $4.85 per quart 
A) $4.34 per quart 
B) $4.59 per quart 
C) $3.65 per quart 
D) $4.85 per quart

Question 20

Identify the units you would expect for the given quantity.
-A speed found by dividing a distance measured in meters by a time measured in seconds.

Accepted Answer

A) meter-seconds 
B) square meters 
C) meters per second 
D) seconds per meter 
A) meter-seconds 
B) square meters 
C) meters per second 
D) seconds per meter

Solve the problem. -Your electrical bill states that you used 870 kilowatt-hours of energy in September. Determine your average power use, in watts.

Answer the following question involving a conversion within the USCS system. -A boat is moving at 48 miles per hour. What is its speed in knots (nautical miles per hour)?

Solve the problem. -A trader bought a stock for $70 and then sold it for $80. He bought it back for $89 and then sold it again for $99. How much did he gain or lose on these transactions?

Evaluate. - $\frac { 1 } { 2 } - \frac { 1 } { 4 }$

Convert the temperature, as indicated. Round your answer to hundredths, if appropriate. - $280 \mathrm {~K}$ , into Celsius

Solve the problem. -Suppose that you have 10 white socks and 6 black socks in a clothes dryer. How many socks must you withdraw from the dryer (without looking)to be certain of having a pair of white socks?

Evaluate. - $\frac { 3 } { 4 } + \frac { 5 } { 3 }$

Convert the common fraction into decimal form. If necessary, round to the nearest thousandth. - $\frac { 19 } { 49 }$

Decide which of the two given prices is the better deal. -The same kind of water is sold in two types of bottle. Which type has the lower unit price? Five 10-oz bottles for $2.30 Seven 12-oz bottles for $4.20

Convert the measurement to the units specified. Round your answer to the nearest tenth. -2500 square yards to square meters

State how much larger or smaller the first unit is than the second. -gram, milligram

Convert the temperature, as indicated. Round your answer to hundredths, if appropriate. - $90 ^ { \circ } \mathrm { F }$ , into Celsius

Carry out the indicated unit conversion. Round your answer, if appropriate. -Convert a weight of 16 pounds into ounces; there are 16 ounces in 1 pound.

Solve the problem. -A curved bridge rises over a canyon. The two endpoints of the bridge are one mile apart horizontally. The bridge rises to a height of 353 feet above the horizontal. Approximately what is the walking distance along the bridge, in feet?

Decide whether the statement makes sense. Explain your reasoning. -If you complete the four-step problem-solving process carefully and thoroughly, then you will have no uncertainty about your final answer.

Decide whether the statement makes sense. Explain your reasoning. -I figured out the number of seconds in a week by multiplying 7 by 24 by 60 by 60.

Carry out the indicated unit conversion. Round your answer, if appropriate. -A car is driving at 180 miles per hour. What is its speed in miles per minute?

Solve the problem. -It takes you 84 seconds to walk from the first (ground)floor of a building to the fourth floor. How long will it take to walk from the first floor to the 8th floor (at the same pace, assuming that all floors have the same height)?

Solve the problem. -A supermarket in Japan sells soy milk for 382 yen per liter. If there are 83.21 yen per dollar, then what is the price in dollars per quart?

Identify the units you would expect for the given quantity. -A speed found by dividing a distance measured in meters by a time measured in seconds.

Thinking Critically

Numbers in the Real World

Managing Money

Statistical Reasoning

Putting Statistics to Work

Probability: Living With the Odds

Exponential Astonishment

Modeling Our World

Modeling With Geometry

Mathematics and the Arts

Filters

Exam 2: Approaches to Problem Solving