Question 1

y varies inversely with the square of x . If y = 112 when x = 4, find y when x is 7.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 2

y varies directly with x . If y is - 12 when x is 2, find x when y is - 30.

Accepted Answer

A)  x = - 3 
B)  x = 3 
C)  x = 2 
D)  x = - 5 
E)  x = 5 
A)  x = - 3 
B)  x = 3 
C)  x = 2 
D)  x = - 5 
E)  x = 5

Question 3

d varies directly with the square of r . If d = 80 when r = 2, find d when r = 3.

Accepted Answer

A)  d = 9 
B)  d = 180 
C)  d = 36 
D)  d = 60 
E)  d = 400 
A)  d = 9 
B)  d = 180 
C)  d = 36 
D)  d = 60 
E)  d = 400

Question 4

The following graph shows the relationship between a company s profits P and the number of items it sells x . ( P is in dollars.) How many items must the company sell to make their maximum profit?

Accepted Answer

A)  The company must sell 20 items to make their maximum profit. 
B)  The company must sell 50 items to make their maximum profit. 
C)  The company must sell 80 items to make their maximum profit. 
D)  The company must sell 100 items to make their maximum profit. 
E)  The company must sell 70 items to make their maximum profit. 
A)  The company must sell 20 items to make their maximum profit. 
B)  The company must sell 50 items to make their maximum profit. 
C)  The company must sell 80 items to make their maximum profit. 
D)  The company must sell 100 items to make their maximum profit. 
E)  The company must sell 70 items to make their maximum profit.

Question 5

y varies directly with x . If y is 15 when x is 3, find y when x is 5.

Accepted Answer

A)  y = 10 
B)  y = 20 
C)  y = 9 
D)  y = 40 
E)  y = 25 
A)  y = 10 
B)  y = 20 
C)  y = 9 
D)  y = 40 
E)  y = 25

Question 6

Let   Evaluate

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 7

Let   Evaluate     __________

Accepted Answer

The answer of Let   Evaluate   ...

Question 8

d varies directly with the square of r . If d = 375 when r = 5, find d when r = 6. d = __________

Accepted Answer

The answer of d varies directly with the square of...

Question 9

A painting is purchased as an investment for $110. If its value increases continuously so that it doubles every 3 years, then its value is given by the function   where t is the number of years since the painting was purchased, and V ( t ) is its value (in dollars) at time t . Find V (3).

Accepted Answer

A)  $270 
B)  $200 
C)  $660 
D)  $880 
E)  $220 
A)  $270 
B)  $200 
C)  $660 
D)  $880 
E)  $220

Question 10

Suppose you have a job that pays $7.25 and hour and you work anywhere from 15 and 31 hours per week. Write an equation, with a restriction on the variable   that gives the amount of money   you will earn for working   hours in one week.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

y varies inversely with the square of x . If y = 112 when x = 4, find y when x is 7.

y varies directly with x . If y is - 12 when x is 2, find x when y is - 30.

d varies directly with the square of r . If d = 80 when r = 2, find d when r = 3.

The following graph shows the relationship between a company s profits P and the number of items it sells x . ( P is in dollars.) How many items must the company sell to make their maximum profit?

y varies directly with x . If y is 15 when x is 3, find y when x is 5.

Let Evaluate

Let Evaluate __________

d varies directly with the square of r . If d = 375 when r = 5, find d when r = 6. d = __________

A painting is purchased as an investment for $110. If its value increases continuously so that it doubles every 3 years, then its value is given by the function where t is the number of years since the painting was purchased, and V ( t ) is its value (in dollars) at time t . Find V (3).

Suppose you have a job that pays $7.25 and hour and you work anywhere from 15 and 31 hours per week. Write an equation, with a restriction on the variable that gives the amount of money you will earn for working hours in one week.

Notation and Symbols

Simplifying Expressions

Paired Data and Graphing Ordered Pairs

Multiplication With Exponents

The Greatest Common Factor and Factoring by Grouping

Reducing Rational Expressions to Lowest Terms

Review of Solving Equations

Rational Exponents

Completing the Square

Exponential Functions

The Circle

Sequences

Filters

Exam 8: The Slope of a Line

y varies inversely with the square of x . If y = 112 when x = 4, find y when x is 7.

y varies directly with x . If y is - 12 when x is 2, find x when y is - 30.

d varies directly with the square of r . If d = 80 when r = 2, find d when r = 3.

The following graph shows the relationship between a company s profits P and the number of items it sells x . ( P is in dollars.) How many items must the company sell to make their maximum profit?

y varies directly with x . If y is 15 when x is 3, find y when x is 5.

Let Evaluate

Let Evaluate __________

d varies directly with the square of r . If d = 375 when r = 5, find d when r = 6. d = __________

A painting is purchased as an investment for $110. If its value increases continuously so that it doubles every 3 years, then its value is given by the function where t is the number of years since the painting was purchased, and V ( t ) is its value (in dollars) at time t . Find V (3).

Suppose you have a job that pays $7.25 and hour and you work anywhere from 15 and 31 hours per week. Write an equation, with a restriction on the variable that gives the amount of money you will earn for working hours in one week.

Notation and Symbols

Simplifying Expressions

Paired Data and Graphing Ordered Pairs

Multiplication With Exponents

The Greatest Common Factor and Factoring by Grouping

Reducing Rational Expressions to Lowest Terms

Review of Solving Equations

Rational Exponents

Completing the Square

Exponential Functions

The Circle

Sequences

Filters