Ian earns $12.50 per hour for working at a restaurant. on friday he spent 2 1/4 hours cleaning, 1 1/3 hours doing paperwork, and 1 5/12 hours serving customers. what were ian’s

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Simplify the expression. -2/5(10+15m-20n)

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?