Math Review

Front

Lacey bought a new purse that originally cost $25 and is on sale for $15. Find the percent of change in the price of the purse.

Back

Decrease of 40%

Front

What does the P represent in the simple interest formula I=Prt?

Back

Principle

Front

Is -3r + 137 equivalent to the expression 6r - r + 8(15 - r) + 23 - 6?

Back

It is equivalent.

Front

2x - 2 < 4. What values of x make the inequality true?

Back

x < 3

Front

What does the variable x represent in the equation 6(x + 18) = 192 for Jarred's cabinet kits? Options: the number of screws in one kit, the number of boards in one kit, the number of screws in all 6 kits, the number of boards in all 6 kits.

Back

the number of boards in one kit

Front

Julie works Sunday, Monday, and Wednesday for 10 hours each day. On Tuesday, Thursday, and Friday, she works 7 hours each day. She does not work on Saturday. Her weekly total earnings are $612. What is Julie's hourly rate of pay in dollars?

Back

$12

Front

The sum of a number, n, and 8 is multiplied by -4 and the result is -12. What is the number?

Back

n = -5

Front

The average rate of hair growth is 2.5 centimeters every 2 months. How many months will it take to grow 22.5 centimeters of hair?

Back

18 months

Front

A satellite is 18 meters wide. A model of it was built with a scale of 1 centimeter: 3 meters. How wide is the model?

Back

6 centimeters

Front

Change this improper fraction into a mixed number: 47/5

Back

9 ⅖