Evaluating Functions Given a Domain

Ms. Brackemyer is collecting pencils.  The function p(x)=5x+12 tells us the total amount of pencils Ms. Brackemyer has after collecting for x number of days.  What is the meaning of p(8)=52?

• Ms. Brackemyer starts with 8 pencils and ends with 52.

• After 8 days, Ms. Brackemyer has 52 pencils.

• Ms. Brackemyer starts with 52 pencils and gets 4 more every day.

• Every day, Ms. Brackemyer gets 4 new pencils until she has 52.

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

Evaluate f(x) = x² for x = -8

• 64

• -64

• -16

• 16

Evaluate f(x)=-2x+13   for f(10)

• -7

• 1

• -8

• 7

What is the range of the function for this situation?

• greater than or equal to -1.2

• less than or equal to 1.2

• greater than or equal to -2.572

• less than or equal to 2.572

What is the domain of the given function?

What is the domain of the function for this situation?

To find the domain, which part of the function should be set greater than or equal to 0?

What is the domain of the given function?