Stop and shop purchases boxes of cereal for d dollars. then, it includes a 45% mark up in the selling price. which of the following expressions represents the selling price for each box of cereal? a. 0.45d b. d+0.45 c. 1.45d d. d-0.45

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?