8th Math STAAR Review #5 (8.5H 8.8A)

Which situation describes a non-proportional relationship?

Which table represents a non-proportional relationship between x and y?

• A. Table A

• B. Table B

• C. Table C

• D. Table D

Which situation could NOT represent a proportional relationship?

• A. The number of gallons of water in x barrels with 42 gallons of water in each barrel

• B. The amount an employee who makes $8.50 per hour earns in h hours

• C. The weight in x weeks of a puppy that gains 2 pounds per week if its starting weight is 8 pounds

• D. The cost of purchasing p pounds of bananas for $0.55 per pound

Which situation represents a proportional relationship?

• The cost of purchasing a basket of oranges for $1.30 per pound plus $5.00 for the basket

• The cost of purchasing peaches for $7.00 per box of peaches with a delivery charge of $3.00

• The cost of purchasing grapefruit for $1.80 per pound with a coupon for $1.00 off the total cost

• The cost of purchasing apples for $1.75 per pound plus a shipping fee of $0.16 per pound

The perimeter of the triangle shown is 17x units. The dimensions of the triangle are given in units. Which equation can be used to find the value of x?

• 17x = 30 + 7x

• 17x = 15 + 22x

• 17x = 7 + 30x

• 17x = 22 + 15x

Helen had $330 in her savings account when Vince opened a savings account with zero dollars.

• -Helen deposited $30 into her account each week for x weeks.

• -Vince deposited $50 into his account each week for x weeks.

• -The accounts did not earn interest.

• Which inequality represents the situation when the amount of money in Helen’s account was greater than the amount of money in Vince’s account?

• 30x < 330 + 50x

• 50x > 330 + 30x

• 30x > 330 + 50x

• 50x < 330 + 30x

Jerry has a new job and earns a salary of $45,000. Victoria has a new job and earns a salary of $54,000. Jerry will receive a salary increase of $2,500 per year, and Victoria will receive a salary increase of $1,500 per year. Which equation can be used to find x, the number of years it will take Jerry to earn the same salary as Victoria?

• 45,000x + 2,500x = 54,000x + 1,500x

• 45,000x + 2,500 = 54,000x + 1,500

• 45,000 + 2,500x = 54,000 + 1,500x

• 45,000x + 2,500x = 54,000 + 1,500

Veronica is ordering trophies for her school. Company P charges $3.50 for each trophy and a one-time engraving fee of $25. Company R charges $7.50 for each trophy and a one-time engraving fee of $17. Which inequality can be used to find x, the minimum number of trophies that can be ordered so that the total charge at Company P is less than the total charge at Company R?

• 3.5 + 25x < 7.5 + 17x

• 3.5 + 25x > 7.5 + 17x

• 3.5x + 25 < 7.5x + 17

• 3.5x + 25 > 7.5x + 17

Two eighth-grade classes are selling raffle tickets to raise money.

-One class is selling tickets for $2.50 each and has already raised $350

-The other class is selling tickets for $3.00 each and has already raised $225.

Which equation can be used to find t, the number of tickets each class needs to sell so that the total amount raised is the same for both classes?

• Not here