Bendig Middle School is selling spirit wear as a school fund-raiser. They are offering T-shirts with 3 different designs for $12.50 each. They will earn 10% of the value of the first 100 T-shirts sold, 15% of the value of the next 400 T-shirts sold, and 25% of the value of the number of T-shirts above 500 sold. Complete questions 15 below.

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

Find the distance between (7,-6) and (-3,-9)