8th STAAR Review #2

Clarissa needs a $2,500 loan in order to buy a car. Which loan option would allow her to pay the least amount of interest?

• An 18-month loan with a 4.75% annual simple interest rate

• A 30-month loan with a 4.00% annual simple interest rate

• A 24-month loan with a 4.25% annual simple interest rate

• A 36-month loan with a 4.50% annual simple interest rate

Point J (−4, −6) and point K (4, 4) are located on a coordinate grid. Which measurement is closest to the distance between point J and point K in units?

• 18 units

• 6 units

• 13 units

• 9 units

A rectangle’s perimeter and its area have the same numerical value. The width of the rectangle is 3 units. What is the length of the rectangle in units?

• 4

• 9

• 12

• 6

A cone and its dimensions are shown in the diagram. Which measurement is closest to the volume of the cone in cubic inches?

• 186.38 in.³

• 248.50 in.³

• 745.51 in.³

• 62.13 in.³

Which set of ordered pairs represents y as a function of x?

• {(2, 5), (3, 1), (2, 1), (4, 7)}

• {(3, 2), (4, 3), (5, 2), (2, 6)}

• {(1, 3), (3, 5), (2, 5), (1, 6)}

• {(4, 7), (4, 6), (4, 4), (4, 1)}

A circle is graphed on a coordinate grid and then reflected across the y-axis. If the center of the original circle was located at (x, y), which ordered pair represents the center of the new circle after the transformation?

• (x, y)

• (x , −y)

• (−x y)

• (−x, −y)

An inequality is shown.

Which value of x makes the inequality true?

• 1/5

• 1.6

• 0.09

• ^√0.02

Paula completely covered a square wall using 87.5 ft2 of wallpaper without any overlap. Which measurement is closest to the side length of this wall in feet?

• 22 ft

• 44 ft

• 9 ft

• 7 ft

Ben collected data from a group of 12 people. He measured each person’s resting heart rate and recorded the average number of hours each person exercised per week. He created a scatterplot to show the data he collected. Based on the scatterplot, what is the best prediction of the resting heart rate, in beats per minute, of a person who exercises an average of 8 hours each week?

• 30 beats per minute

• 50 beats per minute

• 55 beats per minute

• 60 beats per minute

A right triangle and two of its side lengths are shown in the diagram. Which measurement is closest to the value of x in centimeters?

• 37.1 cm

• 40.8 cm

• 27 cm

• 51 cm