Piper works at a camera store. he is paid an hourly rate 16% commission on everything he sells. one week, he is paid $365 for working 20 hours and selling $1500 worth of camera equipment. what is his hourly rate?

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents