Two sisters, allie and bonnie are saving money for a trip to europe. allie has $1500 and adds $500 each month to this amount. bonnie has $2300 and adds $400 each month to this amount. how many months must allie save to exceed the amount of money that bonnie has saved?

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

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

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?