Question 1

Solve the equation and check your solution.
-

Accepted Answer

A)  x = -6, -7 
B)  x = 6, 7 
C)  x = 6118 
D)  No solution

Question 2

Solve the equation and check your solution.
-

Accepted Answer

A)  x = -5 
B)  x = 0 
C)  x = 4 
D)  No solution

Question 3

Answer true or false.
-

Accepted Answer

A) True 
 B)False

Question 4

Add or subtract.
-

Accepted Answer

A)   
B)   
C)   
D)  6x + 7

Question 5

Add or subtract.
-

Accepted Answer

A)  7b 
B)  2a 
C)  49b 
D)  0

Question 6

Solve the equation and check your solution.
-

Accepted Answer

A)  x = 27 
B)  x = 9 
C)   
D)

Question 7

Solve the problem.
-While traveling in a car, the centripetal force a passenger experiences as the car drives in a circle varies jointly as the mass of the passenger and the square of the speed of the car. If a passenger experiences a force of 129.6
Newtons when the car is moving at a speed of 40 kilometers per hour and the passenger has a mass of 90
Kilograms, find the force a passenger experiences when the car is moving at 20 kilometers per hour and the
Passenger has a mass of 80 kilograms.

Accepted Answer

A)  28.8 N 
B)  36 N 
C)  25.6 N 
D)  32 N

Question 8

Solve the problem and answer the question.
-The campus print shop has been commissioned to print playbills for the drama department's production of "The Mouse That Roared." The playbills will be in the shape of a rectangle that will be folded in half. The unfolded
Sheet is to have an area of  and the width of the sheet is to be 6 cm more than  its length. Determine
The length and width of the playbill. (Round to the nearest centimeter, if necessary.)

Accepted Answer

A)  l = 32 cm, w = 18 cm 
B)  l = 61 cm, w = 9 cm 
C)  l = 18 cm, w = 32 cm 
D)  l = 24 cm, w = 24 cm

Question 9

Find the least common denominator for the expression.
-

Accepted Answer

A)   
B)  8a(a + 6) 
C)   
D)  8a + 6

Question 10

Add or subtract.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 11

Add or subtract.
-

Accepted Answer

A)   
B)   
C)   
D)  3

Question 12

Simplify.
-

Accepted Answer

A)   
B)   
C)  5x + 3 
D)

Question 13

Find the quantity indicated.
-y varies directly as z. If y = 110 when z = 11, find y when z = 13.

Accepted Answer

A)  y = 121 
B)  y = 130 
C)  y = 100 
D)  y = 169

Question 14

Solve the problem.
-If the voltage, V, in an electric circuit is held constant, then the current, I, is inversely proportional to the resistance, R. If the current is 160 milliamperes (mA) when the resistance is 2 ohms, find the current when the
Resistance is 8 ohms.

Accepted Answer

A)  636 mA 
B)  80 mA 
C)  640 mA 
D)  40 mA

Question 15

Solve the problem.
-The amount of water used to take a shower is directly proportional to the amount of time that the shower is in use. A shower lasting 17 minutes requires 13.6 gallons of water. Find the amount of water used in a shower
Lasting 5 minutes.

Accepted Answer

A)  4 gal 
B)  3.2 gal 
C)  85 gal 
D)  4.8 gal

Question 16

Find the least common denominator for the expression.
-

Accepted Answer

A)  x + 9 
B)   
C)   
D)

Question 17

Divide.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 18

Find the quantity indicated.
-h varies jointly as f and g. Find k when h = 104, f = 65, and g = 40.

Accepted Answer

A)  k = 40 
B)   
C)   
D)  k = 25

Question 19

Solve the problem and answer the question.
-Jim can run 5 miles per hour on level ground on a still day. One windy day, he runs 12 miles with the wind, and in the same amount of time runs 5 miles against the wind. What is the rate of the wind?

Accepted Answer

A)   
B)  5 mph 
C)   
D)

Question 20

Solve the equation and check your solution.
-

Accepted Answer

A)   
B)   
C)  x = 6 
D)  x = 5

Exam 7: Rational Expressions and Equations

Solve the equation and check your solution. -

Solve the equation and check your solution. -

Answer true or false. -

Add or subtract. -

Add or subtract. -

Solve the equation and check your solution. -

Find the least common denominator for the expression. -

Add or subtract. -

Add or subtract. -

Simplify. -

Find the quantity indicated. -y varies directly as z. If y = 110 when z = 11, find y when z = 13.

Solve the problem. -If the voltage, V, in an electric circuit is held constant, then the current, I, is inversely proportional to the resistance, R. If the current is 160 milliamperes (mA) when the resistance is 2 ohms, find the current when the Resistance is 8 ohms.

Solve the problem. -The amount of water used to take a shower is directly proportional to the amount of time that the shower is in use. A shower lasting 17 minutes requires 13.6 gallons of water. Find the amount of water used in a shower Lasting 5 minutes.

Find the least common denominator for the expression. -

Divide. -

Find the quantity indicated. -h varies jointly as f and g. Find k when h = 104, f = 65, and g = 40.

Solve the problem and answer the question. -Jim can run 5 miles per hour on level ground on a still day. One windy day, he runs 12 miles with the wind, and in the same amount of time runs 5 miles against the wind. What is the rate of the wind?

Solve the equation and check your solution. -