Algebra Unit 5 Test Review

What is the answer to letter a?

What is the answer to letter b?

Answer explanation

a = 90
b = -75

Which equation represents the function?

Function c is defined by the equation c(n) = 50 + 4n. It gives the monthly cost, in dollars, of visiting a gym as a function of the number of visits, n. Find the inverse function.

Function c is defined by the equation c(n) = 50 + 4n. It gives the monthly cost, in dollars, of visiting a gym as a function of the number of visits, n. Find the value of c(8) and explain what it means in this situation.

• $54; it means that 8 visits cost $54.

• $75; it means that 8 visits will cost $75.

• 8 visits will cost $62.

• 8 visits will cost $82.

Mathematical Equivalence

ON

This is an example of:

(a)  

• Exponential Growth

• Linear Growth

• Linear Decay

• Exponential Decay

Mathematical Equivalence

ON

Proportional or Not Proportional?

• Proportional

• Not Proportional

Circle all of the equations that show a proportional relationship.

• y = 3x

• y = x-4

• C = 5m - 20

• C = 7.99m

• y = 1/3x

True or False: An equation of a proportional relationship must follow the formula: y = kx

• True

• False