2) James spent $65 for n books. Write an expression that can be used to find the cost of
one book

The perimeter of a rhombus with a side of 6 is 24

Graph the equation. select integers for x

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?