U1 Skill 2 Function Notation in context

The function R represents the rain total rainfall, in cm, after x hours. The graph of the function is shown.

What was the rainfall after 2 hours?

• 1 cm

• 3 cm

• 4 cm

• 5 cm

Tags

CCSS.HSF.IF.B.4

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.

Tags

CCSS.HSF.IF.B.4

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.

Tags

CCSS.HSF.LE.B.5

A babysitter's salary can be represented by a function, S, where the input is the hours worked.

What does S(4)=70 represent?

• The salary of a babysitter who worked 4 hours is $70.

• The number of hours the babysitter worked is 70.

• The salary of a babysitter who worked 70 hours is $4.

• The salary of the babysitter who worked 0 hours is $4.

Tags

CCSS.HSF.IF.A.2

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

Function F shows the distance a car traveled after h, hours. The graph is shown.

How far did the car travel after 2 hours?

• 80 miles

• 160 miles

• 240 miles

• 320 miles

Tags

CCSS.HSF.IF.B.4

The function C(x) = 25x + 50 represents the labor cost, in dollars, for Contractor A to build a deck, where x is the number of hours of labor.

Explain the meaning of C(2) = 100

• The labor cost for Contractor A is $100 for 2 hours.

• The labor cost for Contractor A is $2 for 100 hours.

• The labor cost for Contractor A is $25 for 2 hours.

• The labor cost for Contractor A is $100 for 25 hours.

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.  What does g(8)=28 mean in context?

• This means that after 8 packages of gum, the company makes $8.

• This means that 28 packs of gum costs $8

• This means that 8 packages of gum costs $28.

• 3 packs of gum cost $4

Tags

CCSS.HSF.LE.B.5

A company is selling bubble gum.  The function g(x) tells the company how much to charge if someone buys x packages of bubble gum. What does g(2)<g(3) mean in context

• You pay less for 2 packs of gum than 3 packs of gum

• 2 is less than 3

• We don't know how much 3 packs of gum costs

• It is 2/3 for a pack of gum

Tags

CCSS.HSA-SSE.A.1A