Valerie earns $24 per hour which expression can be used to show how much money she earns in 7 hours

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

How do you find principle and simple interest

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?