STAAR Review #3

• 
• 
• 
• 

Triangle MNP and triangle JKL are similar right triangles.

Which proportion can be used to show that the slope of JL is equal to the slope of MP?

• 
• 
• 
• 

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

The number of gift baskets Nikki can make varies directly with the amount of time she spends making the baskets. She can make 4 baskets in 1/2 hour. How many baskets can Nikki make in 5 hours?

• 20

• 32

• 28

• 40

Mr. Flores opened an account with a deposit of $5,000.

• The account earned annual simple interest.

• He did not make any additional deposits or withdrawals.

• At the end of 4 years, the balance of the account was $6,500. What is the annual interest rate on this account?

• 5.8%

• 7.5%

• 3.3%

• 1.9%

Quadrilateral FGHJ was dilated with the origin as the center of dilation to create quadrilateral F'G′H′J′. Which rule best represents the dilation that was applied to quadrilateral FGHJ to create quadrilateral F'G′H′J′?

• (x, y) --> (5/7x, 5/7y)

• (x, y) --> (x + 1, y + 2)

• (x, y) --> (1.4x, 1.4y)

• (x, y) --> (x - 2, y + 1)

Melissa is saving $25 that she earned for washing her mom’s car. She earns $10 every week for doing chores, which she also saves. Which function can be used to find t, the amount of money Melissa will have saved at the end of n weeks of doing chores?

• t = 10n + 25

• t = 25n + 10

• t = 35n

• t = 15n

A rectangular prism and its dimensions are shown in the diagram. What is the total surface area of this prism in square inches?

• 162.5 in.²

• 243.75 in.²

• 237.5 in.²

• 81.25 in.²