If b + 7 is an odd integer, which of the following could be the value of b? answer choices -8, -3, 1 and 5

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?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

If value of cos330° is √3/2 then find tan165°.