2. let f(x) = 5x + 2 and g(x) = x + 3 what is (f x g)(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?

Find the zeros of each function. f(x) = x^2 + 5x - 6

Ihonestly have no clue if it's each or none.