Linear Function word problems

A computer engineer wrote a software program that assigns a value each time the program is run. The first 5 assigned values are listed below: -2, 5, 12, 19, 26. Which formula did the engineer use to determine the assigned values, where n is the number of times the program was run?

• n - 9

• 7n + 9

• 7 - 2n

• 7 - 9n

Tags

CCSS.HSF.BF.A.2

An art teacher bought paintbrushes for her class. The number of paintbrushes she bought was 6 more than twice the price, x, of each paintbrush in dollars.

Enter the function f(x) that describes the total cost of the paintbrushes, in dollars, as a function of the price, x.

• f(x) = x(2x+6)
• f(x) = x(2x-6)

• f(x) = 2x-6

Tags

CCSS.HSF-BF.A.1A

The Thompson family is selling golf clubs at a garage sale. They sold a golf bag for $10 and are selling each club for $2 per club. Write the function that shows the amount of money, m, they will make if they sell c golf clubs.

C(m)

Slope intercept form

Jackson wants to download a music streaming app on his phone. There are two music streaming apps that he is considering:

- Music A charges $10 for a year membership plus $1.25 for every song downloaded.

- Music B charges $14 for a year membership plus $0.75 for every song downloaded.

Which 2 functions represent the cost of music App A and B

• F(A) =2.25x + 10

  F(B) =1.75x + 14

• F(A) =1.25x + 5

  F(B) =0.75x + 7

• F(A) =1.25x + 10

  F(B) =0.75x + 14

• F(A) =1.25x - 10

  F(B) =0.75x - 14

Tags

CCSS.8.EE.C.8C

An ice sculpture is used as a centerpiece at a banquet. Once the sculpture is removed from the freezer it begins to melt. The height of the sculpture can be represented by the function H(t) = -2t + 24, as shown on the graph. Which of the following statements is a correct interpretation of the function representing the height of the sculpture? Select all that apply.

• It takes 2 hours for the sculpture to melt completely.

• The initial height of the sculpture is 24 inches.

• The sculpture melts 2 inches each hour.

• The initial height of the sculpture is 2 inches.

• The sculpture melts 24 inches each hour.

Tags

CCSS.HSF.LE.B.5

How long does the football take to reach the ground?

• 5 seconds

• 2.5 seconds

• 100 seconds

• 20 seconds

Julie decided to grow a plant from a seed. She measured the height of her plant each day for 30 days. After Julie watched and measured her plant for 30 days, she determined the height of the plant, in centimeters, is equal to the function f(t) = 0.4t, where t = 0 at day 0, and t is the number of days that have passed since the seed was planted. Enter the value of f(t) at t = 10.

• 10

• 4

• 3

• 5

Tags

CCSS.HSF.IF.A.2

A company charges its customers a flat fee of $6 plus an additional $5 per hour to kennel a dog. A function, C(h), can be used to describe the relationship between the number of hours, h, and the total amount, in dollars, of charges.

Write an equation in function notation to represent the function. Type your response in the box below

Tags

CCSS.HSF-BF.A.1A

The graph of a certain exponential function, f(x)=a*b^x + c, has these characteristics: - No x-intercept. - A positive y-intercept. - The graph ascends continuously from left to right. What must be true about the values of a, b, and c in the function?

• a and c are both positive and b is negative

• all three values are positive

• a and c are both negative and b is positive

• all three values are negative

Tags

CCSS.HSF.LE.A.2

Which function represents the sequence?

• f(n) = n + 3

• f(n) = 7n - 4

• f(n) = 3n + 7

• f(n) = n + 7

Tags

CCSS.HSF.BF.A.2