Michelle purchased 25 audio files in January. In February she purchased 40 audio files. Find the percent increase in the number of audio files purchased per month.

You return several shirts to a store. The receipt shows that the amount placed back on your credit card is - $30.60. Each shirt is - $6.12. How many shirts did you return?

If ln (a) = 2, ln (b) = 3, and ln (c) = 5, evaluate the following: ln (a^-4/b^1 c^1)

Ellen had 25 hair clips. 7 of them and the rest were purple, what precent of the hair clips were blue

How would you multiply a fracton 1/8 times 2/5

Evaluate the expression 3 (2-1) + 2 + - - 7 for x = 3 Step 1: What is the first step for evaluating this expression?

3. Which of the following is equivalent to 3 (y - 1 + 2y) ? A. 3y - 9 B. 6y - 3 C. 9y - 3 D. 3y - 3

If y various directly with x, write an equation for the direct variations. The find each value. 1.) If y = - 4 when x = 10, find y when x = 5 2.) If y = 12 When x = - 15, find y when x = 2 3.

89 (54x - 36) + 2 = - 3/4 (-40 + 16x) + 90xsolve for x

The ratio of cars to vans in a parking lot is 1 to 4. If there are 40 cars and vans in the parking lot altogether then how many vans are there?

Geoffrey's babysitter stayed from 6:25 P. M. until 10:40 P. M. For how much time does the babysitter need to be paid?