Algebra BM 3 #s 17-40

The table shows several values representing the size of the audience over time, t, in years, since a musician first performed. Which function, g(t), best models the size of the audience after t years, where 0 ≤ t ≤ 4?

• B

• C

• D

Tags

CCSS.HSF.LE.A.2

A mechanic at a bicycle shop replaces tires and brake pads. The function f(x) = -4x + 32 represents the remaining number of tire replacements the mechanic needs to complete by the end of x hours of work, where 0 ≤ x ≤ 8. What is the initial number of tire replacements the mechanic needs to complete when x = 0?

• 32 tire replacements

• 28 tire replacements

• 4 tire replacements

• 0 tire replacements

Tags

CCSS.HSF.LE.B.5

Use the information given to answer the question. A mechanic at a bicycle shop replaces tires and brake pads. Part B The function g(x) = -8x + 64 represents the remaining number of brake pad replacements the mechanic needs to complete by the end of x hours of work, where 0 ≤ x ≤ 8. What does -8 represent in the function g(x)?

• the y-intercept of the function and the initial number of brake pad replacements the mechanic needs to complete when x = 0

• the y-intercept of the function and the change in the number of brake pad replacements remaining at the end of each hour

• the slope of the function and the initial number of brake pad replacements the mechanic needs to complete when x = 0

• the slope of the function and the change in the number of brake pad replacements remaining at the end of each hour

Tags

CCSS.HSF.LE.B.5

Which function best represents a linear model for the data in the scatter plot?

• y = 1.39x - 6.92

• y = 1.39x + 6.92

• y = 6.92x - 1.39

• y = 6.92x + 1.393

Tags

CCSS.8.EE.B.5

Which statement is true about the y-intercept of f(x)?

• A

• B

• C

• D

A phone company offers two different international calling plans. The graph models the total cost, y, in dollars, based on the time, x, in minutes, for each phone call. After how many minutes is the cost the same for each international calling plan?

• 2 minutes

• 3 minutes

• 4 minutes

• 5 minutes

Tags

CCSS.8.EE.C.8C

Consider the relation given by the set of ordered pairs. {(0, 3), (1, 4), (3, 6), (4, 5), (5, 5), (5, 6)} Which ordered pair should be removed so that the relation represents a function?

• (0, 3)

• (1, 4)

• (3, 6)

• (5, 5)

Tags

CCSS.8.F.A.1

A summer camp uses 120 bottles of water per day for campers. The camp owner graphs the total number of water bottles used by the campers over the 30-day camp session. If x represents the number of days camp has been in session, and y represents the total number of water bottles used, which best represents the scales that could be used for the graph?

• The x-axis could be labeled from 0 to 30 with a scale of 1, and the y-axis could be labeled from 0 to 120 with a scale of 10.

• The x-axis could be labeled from 0 to 30 with a scale of 1, and the y-axis could be labeled from 0 to 3,600 with a scale of 120.

• The x-axis could be labeled from 0 to 120 with a scale of 10, and the y-axis could be labeled from 0 to 30 with a scale of 1.

• The x-axis could be labeled from 0 to 3,600 with a scale of 120, and the y-axis could be labeled from 0 to 30 with a scale of 1.

Tags

CCSS.8.EE.B.5

Consider the histograms, which represent the lengths, in inches, of various students’ hair in two classes. Determine whether the statement 'Class 1’s data is skewed left' is true or false.

• True

• False

Consider the histograms, which represent the lengths, in inches, of various students’ hair in two classes. Determine whether the statement 'Class 1’s data is symmetric' is true or false.

• True

• False