Amy usually swims 20 laps in 30 minutes. What is her rate in laps per
minute?

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.