7th and 8th Grade Review

Make the percent to decimal.
7%

• .007
• 0.07
• 7
• 70

Make the percent to decimal.
0.32%

• 32
• 0.32
• 3.2
• 0.0032

In a class of 30 kids, 3 forgot to get their report cards signed. What percent is that?

• 3%
• 30%
• 10%
• 70%

Simplify:

9y + 2y - 5y

• 16y

• 16y³

• 6y

• 7y

Three pounds of grapes costs $6.57. What is the constant of proportionality that relates the cost in dollars, y, to the number of pounds of grapes, x?

• $2.19/1 pound

• $2.30/1 pound

• $3.26/ 1 pound

• $6.57/1 pound

Two marbles are randomly drawn from a bag containing 3 purple, 1 blue, and 1 yellow marble. The first marble is blue and is not replaced. Find the probability of drawing a second marble that is purple.

• 3/5

• 3/4

• 3/20

• 2/5

Maria borrowed $3,000 at a simple interest rate of 4% per year.  How much did she have to repay after 4 years?

• $480
• $3,480
• $4,800
• $7,800

Paul deposits $4000 in a bank which pays a compound interest rate of 5% per year. How much will he have in 7 years.

• $4866.61

• $5628.40

• $6077.53

• $6326.60

What value of x makes this equation true?

-18+x-4x+5=-64

• x = 15

• x = 17

• x = -17

• x = -11

Palmer bought nachos for $6. She also bought some chocolates for $1.50 each. Palmer did not spend more than $13. Which inequality can be used to find c, the number of chocolates Palmer bought?

• 1.50c – 6 ≤ 13

• 1.50c + 6 ≤ 13

• 1.50c – 6 ≥ 13

• 1.50c + 6 ≥ 13