Gretchen finished her first lap in the 200 m freestyle event in 28.78 seconds. She completed the second lap in 31.31 seconds. By how much did her time increase in the second lap?

Remove parentheses and simplify 7a+6b-4 (3a-3b)

Sam is shopping for a new pairs of shoes. On Monday the shoes were on sale for %40.00, but because they became popular, by Saturday the price had risen to $44.00. What is the percent of increase on the price from Monday to Saturday

A court reporter is paid for her work by the hour. If she makes $75 for 5 hours of work, how much will she be paid for working 12 hours?

What's the difference between 100ft and 50ft?

What's 4687,672 dived by 4753,367

What is the circumference of the circle in terms of / pi? The radius is 30 in.

A rooms length is 3 feet less than twice it's width. The area of the room is 135 square feet. What are the rooms dimensions?

What is the excluded value of y^2-y+5/y+4

Equation 1: Ax+By=C equation 2: Dx+Ey=F which of the following could replace equation 1 and still have the same solution? Select all that apply. A. A multiple of the equation 1. B. The sum of Equation 1 and Equation 2. C.

suppose a marble is chosen randomly from a bag containing 3 blue, 2 red, and 5 green marbles. Determine each theoretical probability