Function Notation Interpret

Function C gives the cost, in dollars, of buying n apples. Which expression matches this situation?

• C (2)

• C (n) = 2

The relationship between the amount of time a car is parked, in hours, and the cost of parking, in dollars, can be described with a function. Cost is the _______________.

• independent variable

• dependent variable

The relationship between the amount of time a car is parked, in hours, and the cost of parking, in dollars, can be described with a function. Time is the _______________.

• independent variable

• dependent variable

The relationship between the amount of time a car is parked, in hours, and the cost of parking, in dollars, can be described with a function. C (3) = 9 means that...

• The cost is $3 for 9 hours.

• The cost is $9 for 3 hours.

The relationship between the amount of time a car is parked, in hours, and the cost of parking, in dollars, can be described with a function. Which statement(s) are true?

• C (0) = 0

• C (4) = C (8)

• C (4) > C (2)

• C (4) = 10

Rule B (left) takes a person’s name as its input, and gives their birthday as the output.

Rule P (left) takes a birthday as its input, and gives a person as the output. Which is a function?

• Rule B

• Rule P

Function Q gives a puppy’s weight in pounds as a function of its age in months (m). True or false?

Q (18) means the weight of the puppy when it was 18 months old.

• True

• False

What is f(4)?

• 1

• 2

• 3

• 4

Answer explanation

f(4) = 4