Test Review

• c = 15n + 8.99

• c = 8.99n + 15

• c = 15(n + 8.99)

• c = 8.99(n + 15)

A scatter plot is shown below. Which pair of points could be used to draw a line that best represents the relationship of the data?

• A. (4,7) and (8,4)

• B. (3,3) and (9,7)

• C. (2,4) and (6,4)

• D. (3,2) and (3,4)

Triangle ABC is rotated 90° about the origin and then reflected over the y axis to form triangle A'B'C'. One of the angles in triangle ABC has a measure of 115°. One of the angles in triangle A'B'C' has a measure of 40°. Which is the measure of an angle in triangle ABC?

• 25°

• 75°

• 155°

• 180°

Which statement comparing the charges for each electrician is true?

• A. Electrician A has an initial fee and an hourly rate that are both less than those for Electrician B.

• B. Electrician A has an initial fee and an hourly rate that are both greater than those for Electrician B.

• C. Electrician A has an initial fee that is less than that for Electrician B. The hourly rate for Electrician A is greater than that for Electrician B.

• D. Electrician A has an initial fee that is greater than that for Electrician B. The hourly rate for Electrician A is less than that for Electrician B.

What is the slope of the line on a coordinate plane that passes through the points (2, 2) and (−1, −2)?

• -4/3

• -3/4

• 3/4

• 4/3

A sphere has a radius of 4 inches. A cone has a radius of 3 inches and a height of 8 inches. Which expression represents the difference in volume, in cubic inches, between the sphere and the cone?

• 4

• 8

• 16

• 32

Which statement best describes what the number 0.3 in the equation represents in this situation?

• A. The starting weight, in pounds, of the alligator.

• B. The approximate number of pounds the alligator gains each week.

• C. The maximum number of pounds the alligator gains each week.

• D. The average number of pounds of food the alligator is fed each week.

Trapezoid ABCD and its image A'B'C'D' are shown on the coordinate plane below. Which series of transformations could be applied to map trapezoid ABCD onto trapezoid A'B'C'D'?

• reflection over the x axis and then a rotation of 180° about the origin

• reflection over the x axis and then a rotation of 90° about the origin

• reflection over the y axis and then a rotation of 180° about the origin

• reflection over the y axis and then a rotation of 90° about the origin