Comparing Functions Given Value

Janet is planning her sweet sixteen birthday party. She must decide which party coordinator she should use so that she spends the least amount of money possible. Each coordinator charges an initial fee for their services, plus an additional fee depending on the number of guests that attend the party. Each coordinator's rates are shown in the image. If Janet is planning on inviting 80 guests, which coordinator should she use?

• Coordinator A

• Coordinator B

• Coordinator C

• Coordinator D

Which choice best describes the difference between the rates at which the girls did jumping jacks?

• Melissa did 6 more jumping jacks per minute than Alicia.

• Alicia did 6 more jumping jacks per minute than Melissa.

• Melissa did 5 more jumping jacks per minute than Alicia.

• Alicia did 5 more jumping jacks per minute than Melissa.

Is the table linear, exponential or neither?

• Linear

• Exponential

• Neither

Which of the following intervals has the largest average rate of change?

• [13,14]

• [13, 17]

• [16, 17]

• [16, 19]

• A

• B

• C

• D

• E

• A

• B

• C

• D

• E

• A

• B

• C

• D

• E

Evaluate f(2).

• f(2) = 5

• f(2) = 12

• f(2) = 10

• f(2) = 0.5

What is the value of x when f(x) = 16?

• x = 4 only

• x = 4 and x = 8

• x = 16

• Not on the graph

What is the value of x when f(x) = 10?

• x = 10 only

• x = 4 and x = 8

• x = 2 and x = 10

• No solution