8th STAAR 2.0 Review 2022

(8.8B) Which situation can be represented by this equation?

8x = 19 + 12x

• Krystal reads 12 pages per hour. Jondo reads 18 pages per hour. How many hours, x, would it take for Krystal and Jondo to read the same number of pages?

• Krystal paid a deposit of $19 plus $18 per hour to rent a dining room at a restaurant. Jondo paid $12 per hour to rent a dining room at a restaurant. How many hours, x, would it take for Krystal and Jondo to pay the same amount of money?

• Krystal installs 12 tiles per hour. Jondo installs 19 tiles per hour and started with 18 tiles already installed. How many hours, x, would it take for Krystal and Jondo to install the same number of tiles?

• Krystal can make $18 per hour by tutoring. Jondo can make $12 per hour by tutoring. Jondo already has $19. How many hours, x, would Krystal and Jondo need to tutor for them to have the same amount of money?

(8.2D) The map shows five proposed routes and distances for a

new state highway between Camden and U.S. Highway 99.

Which list shows these distances from least to greatest?

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(8.5E) The cost for electricity varies directly with the amount of kilowatt hours of electricity used.

The cost for using 1,079 kilowatt-hours of electricity was $129.48.

What was the cost for using 908 kilowatt-hours of electricity?

• $41.52

• $153.86

• $75.67

• $108.96

(8.4B) A student traveled a distance of 68 miles in 136 minutes.

Which graph has a slope that best represents this rate?

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(8.12D) Larry put $1,287 into a savings account 8 years ago.

• The account earned 4% simple annual interest.

• He made no additional deposits or withdrawals.

Based on this information, what is the balance in dollars and cents

in Larry’s savings account at the end of these 8 years?

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(8.3C) The coordinates of the vertices of triangle XYZ are X( − 2, − 1), Y(6, 8) and Z(8, 4).

Triangle XYZ is dilated by a scale factor of 3/2 with the origin as the center of dilation

to create triangle X′Y′Z′.

If (x, y) represents the location of any point on triangle XYZ, which ordered pair

represents the location of the corresponding point on triangle X′Y′Z′?

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(8.5G) Which set of ordered pairs represents y as a function of x?

• {(4, √17 ), (2, √6 ), (1, √3 ), (1, √10 )}

• {( − 7, 2.9), ( − 15, 5.9), ( − 15, 8.9), ( − 7, 11.9)}

• {(11.1, 7), (5.1, 4), (12.1, 5), (6.1, 7)}

• {(√1 , −3), (√2 , −4), (√1 , −5), (√6 , −7)}

(8.8C) Two student groups went to an amusement park on the same day.

• Group 1 bought 9 tickets and received a $120 discount.

• Group 2 bought 3 tickets and received a $30 discount.

• Both groups spent the same total amount of money on tickets.

• The price of each ticket was the same. What was the cost of each ticket?

• $25

• $12.50

• $15

• $7.50