STAAR Review #2

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?

• 3t + 350 = 2.50t + 225

• 350t + 2.50 = 225t + 3

• 2.50t + 350 = 3t + 225

• Not here

Mr. Wilkins deposited $2,500 in a new account at his bank.

• The bank pays 6.5% interest compounded annually on this account.

• Mr. Wilkins makes no additional deposits or withdrawals.

Which amount is closest to the balance of the account at the end of 2 years?

• $2835.56

• $2513.00

• $2662.50

• $2825.00

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The mass of a textbook is approximately 0.00165 metric ton. How is this number written in scientific notation?

• 165 × 10^-5

• 1.65 x 10^-3

• 16.5 x 10^-4

• 0.165 x 10^-2

The graph shows the relationship between the cost of some pecans and the weight of the pecans in pounds.

Which function best represents the relationship shown in the graph?

• y = 5x

• y = 1/5x

• y = 2x

• y = 1/2x

• Pentagon M′N′P′Q′R′ is larger than pentagon MNPQR, because the scale factor is greater than 1.

• Pentagon M′N′P′Q′R′ is smaller than pentagon MNPQR, because the scale factor is less than 1.

• Pentagon M′N′P′Q′R′ is smaller than pentagon MNPQR, because the scale factor is greater than 1.

• Pentagon M′N′P′Q′R′ is larger than pentagon MNPQR, because the scale factor is less than 1.

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?

• 3

• 6

• 2

• 4

• 186.38 in.³

• 248.50 in.³

• 745.51 in.³

• 62.13 in.³