Exam 2: Approaches to Problem Solving

Decide whether the statement makes sense. Explain your reasoning. -My friend wants to lose 15 pounds, but I think that's too much. I think 10 kilograms would make more sense.

Convert the temperature, as indicated. Round your answer to hundredths, if appropriate. - $20 ^ { \circ } \mathrm { C }$ , into Fahrenheit

Write as a common fraction. - $0.52$

Evaluate. - $\frac { 4 } { 3 } \div \frac { 1 } { 7 }$

Evaluate. - $\frac { 5 } { 2 } \div \frac { 2 } { 5 }$

Convert the measurement to the units specified. Round your answer to the nearest tenth. -17 liters to gallons

Solve the problem. -Recently, one U.S. dollar was worth about 0.6158 British pounds. How much would a car have cost in U.S. dollars that cost 8930 British pounds?

Use units to help you answer the question. If necessary, round your answer to two decimal places. -An acre is equal to 43,560 square feet, and there are 5280 feet in a mile. If a farm has the shape of a rectangle measuring 0.9 miles by 1.5 miles, what is the area of the farm in acres?

Solve the problem. -An object has a total volume of 5 liters (which is 5000 cubic centimeters)and a mass of 4 kilograms. What is its density? Will it sink or float in water?

Use the following table of exchange rates to solve the problem. Round your answer when appropriate. Currency Dollars per Foreign Foreign per Dollar British pound 1.624 0.6158 Canadian dollar 1.005 0.9950 European euro 1.320 0.7576 Japanese yen 0.0120 83.33 Mexican peso 0.07855 12.73 -A fresh juice stand in Montreal sells a large glass of orange juice for 4.40 Canadian dollars. If you buy 5 glasses, how much have you spent in (U.S.)dollars?

Decide whether the statement makes sense. Explain your reasoning. -The container was big enough to hold a barrel of water, but it wasn't big enough to hold a barrel of petroleum.

Use units to help you answer the question. If necessary, round your answer to two decimal places. -Suppose water flows from a shower at a rate of 0.32 cubic feet per minute. Do you use more water by taking a 12-minute shower or by filling a bathtub with 0.4 cubic yards of water, and by how Much?

Solve the problem. -You are considering buying 15 silver coins that look alike, but you have been told that one of the coins is a lightweight counterfeit. How can you determine the lightweight coin in a maximum of three weighings on a balance scale?

Convert the common fraction into decimal form. If necessary, round to the nearest thousandth. - $\frac { 11 } { 2 }$

Identify the units you would expect for the given quantity. -The gas mileage of a car, when you travel 5522 kilometers using 11 gallons of gas.

State how much larger or smaller the first unit is than the second. -cubic micrometer, cubic meter

Solve the problem. -An average 12-ounce can of beer contains about 15 grams of alcohol. Consider a person with approximately 4 liters (4000 milliliters)of blood, who quickly drinks two cans of beer. If all the Alcohol were immediately absorbed into the bloodstream, what blood alcohol content would we Find?

Solve the problem. -Recently, one U.S. dollar was worth about 12.73 Mexican pesos. How much would 335 U.S. dollars be worth in Mexican pesos?

Write as a common fraction. -3.98

Write as a common fraction. -0.0002