.A wading pool fills to a depth of 36 inches and drains at the rate of about 3 inches per hour. (a) Write an explicit formula that gives the depth of the water after n hours. (b) How deep will the water be
after 6 hours?

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?