Function Notation Interpret

The function B(x) = 8x + 25 represents the cost (in dollars) of renting a bicycle for x days.

Explain the meaning of B(13)=129

• The cost of renting the bicycle for 13 days is $129.

• The cost of renting the bicycle for 129 days is $13.

• The cost of renting the bicycle for 8 days is $129.

• The cost of renting the bicycle for 129 days is $25.

The function h(t) represents the height in inches of a plant after t weeks. What does the notation h(4) = 5 mean?

• After 5 week the plant is 4 inches tall

• The plant grows at a rate of 5/4 inch per week

• After 4 weeks the plant is 5 inches tall

• The plant grows at a rate of 1 inch per week

The function R represents the rain total rainfall, in cm, after x hours. The graph of the function is shown. Interpret the meaning of R (1.5) = 3

• After 1.5 hours, 3 cm of rain has fallen.

• After 3 hours, 1.5 cm of rain has fallen.

• After 1.5 hours, 1.5 cm of rain has fallen.

• After 3 hours, 3 cm of rain has fallen.

The function B(x) = 8x + 25 represents the cost (in dollars) of renting a bicycle for x days.

If the rental fee was $185, then how many days was the bicycle rented?

• 20 days

• 23 days

• 24 days

• 26 days

Explain the meaning of f(4) = 16.

• The height is 16 feet at 4 seconds.

• The height is 4 feet at 16 seconds.

Write the following in function notation. ABC Furnace charges $75 to make a house call and then $50 an hour after that.

• f(x) = 75x + 50

• f(x) = 50x - 75

• f(x)= 50x + 75

Choose the correct corresponding statement in function notation that represents the minimum height.

• h(20)

• h(40)

• h(0)

• h(70)

The notation ​ . If f is a function, and x is in its domain, then ​ corresponding to the input of x. You can use letters other than f to name a function, ​ .

• Function notation

• such as g or h

What is x if
f(x) = -2?

• 4

• 0

• 3

• 8

What does S(7) represent?

• The salary of a babysitter who worked 7 hours.

• The hours worked if the salary is $7.

• The salary of a babysitter who worked 0 hours.

• The hours worked if the salary is $0.