29. Which integers represent a debit of $7 and a credit of $5?
A +7; +5
B. +7; -5
C. 7; +5
D. -7; -5

How do i solve using pythagorean theorem?

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?

If sin(x) = 0 and cos(x) = 1, what is tan(x)?