Function Notation in Context

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

Tags

CCSS.HSF.IF.A.2

The function c(m) = 1.45m + 3.50 represents the cost of a taxi for m miles.
What does c(7) represent?

• A cost of $7 to ride the taxi
• The cost to ride 7 miles
• The minimum distance to ride a taxi
• The minimum cost of a taxi

Tags

CCSS.HSF.LE.B.5

Derek works at Subway making $9.25 an hour.  The function d(x)=9.25x tells us how much money Derek makes after x hours of working.  What is the meaning of d(4)=37?

• After 4 hours of work, Derek makes $37.
• Derek needs $4 more to have $37 total.
• After working for 4 days, Derek makes $37 total.
• After 4 hours of work, Derek now makes $37 an hour instead of $9.25.

Tags

CCSS.HSF.LE.B.5

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.

Tags

CCSS.HSF.LE.B.5

A company is selling bubble gum.  The function g(x)=3x+4 tells the company how much to charge if someone buys x packages of bubble gum.  Find g(8) and tell what it means within the context of the problem.

• g(8)=8.  This means that after 8 packages of gum, the company makes $8.
• g(8)=42.  This means that 8 packages of gum costs $42.
• g(8)=28.  This means that 8 packages of gum costs $28.
• g(8)=24.  This means that 8 packages of gum costs $24.

Tags

CCSS.HSF.IF.A.2

Two students were infected by chicken pox today. The number of infected students are a function of the number of days, x. The number of infected students after each day, x, is given by the function A(x) = 2(3)^x. What is A(4)?

• 1296

• 4

• 234

• 162

Tags

CCSS.HSF.BF.A.2

Two students were infected by chicken pox today. The number of infected students are a function of the number of days, x. The number of infected students, after each day, x, is given by the function A(x) = 2(3)^x. What does A(6) = 1,458 mean in the context of the problem?

• When 6 days have passed, 1,458 students have been infected with the chicken pox.

• When 1,458 days have passed, 6 students have been infected with the chicken pox

• 2 students have the chicken pox

Tags

CCSS.HSF.LE.B.5

complete the function notation below
f(____) = 214

• 1990
• 1991
• 1989
• 1994

Tags

CCSS.HSF.IF.A.2

H(5) =

• 5
• 16
• 18
• 20

Tags

CCSS.HSF.IF.A.2

f(8) = 12
Convert to coordinate point.

• (8, 12)
• (12, 8)

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1