Unit 4 Lessons 1-5

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 statements about the function are true? Select all that apply.

• The point (3,9) means that it costs $9 to park for 3 hours.

• The parking cost is a function of the amount of time a car is parked.

• The point (3,9) means that it costs $3 to park for 9 hours.

• The cost of parking is the dependent variable

• The cost of parking is the independent variable

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

The prices of different burgers are shown on this sign.

Based on the information from the menu, is the price of a burger a function of the number of patties?

• Yes. There is only one possible price for two patties, which means one output for the same input.

• Yes. There are two possible prices for two patties, which means two outputs for the same input.

• No. There are two possible prices for two patties, which means two outputs for the same input.

• No. There is only one possible price for two patties, which means one output for the same input.

Tags

CCSS.8.F.A.1

The height of water in a bathtub, w, is a function of time, t. Let P represent this function. Height is measured in inches and time in minutes. Match each statement in function notation with a description.

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Tags

CCSS.HSF.LE.B.5

Function f gives the distance of a dog from a post, in feet, as a function of time, in seconds, since its owner left. Find the value of:

f(20) and f(140)

• f(20)=3.1

  f(140)=3.5

• f(20)=1.5

  f(140)=4

• f(20)=3.1

  f(140)=4

• f(20)=1.5

  f(140)=3.5

Tags

CCSS.HSF.IF.B.4

Tyler filled up his bathtub, took a bath, and then drained the tub. The function B gives the depth of the water, in inches, t minutes after Tyler began to fill the bathtub. Choose yes or no to indicate whether the meaning of each statement in this situation is correct.

• a. yes

  b. yes

  c. yes

  d. yes

  e. yes

• a. yes

  b. no

  c. yes

  d. no

  e. yes

• a. no

  b. no

  c. yes

  d. yes

  e. no

Tags

CCSS.HSF.IF.B.4

Function f gives the temperature, in degrees Celsius, t hours after midnight. Match each statement with an equation or expression that represents the statement.

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Tags

CCSS.HSF.IF.A.2

Match each equation with a description of the function it represents.

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Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

The cell phone plan from Company C costs $10 per month, plus $15 per gigabyte for data used.

The plan from Company D costs $80 per month, with unlimited data.

Which is less, C(4) or D(4)?

Which is less, C(5) or D(5)?

• C(4), D(5)

• D(4), D(5)

• C(4), C(5)

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

The cell phone plan from Company C costs $10 per month, plus $15 per gigabyte for data used.

The plan from Company D costs $80 per month, with unlimited data.

Which graph represents functions C and D? 

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Tags

CCSS.8.EE.B.5