Amachine takes 5.4 hours to make 9 parts. at that rate how many parts can the machine make in 25.8 hours

Find the balance at the end of 4 years if 1000 is deposited at the rate of

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?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.