How much do you every 2 weeks if you make 21 an hour and work 42 hours?

What properties allow transformation to be used as a problem solving tool

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

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?