|4 0 | |0 1|
|-1 2 | • | -3 1|
|-3 -1 |

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

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?