Any one want to be my gf

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?

Use sigma notation to represent the following series for 9 terms.

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4