Can someone pls help me with this :c will mark brainliest if closest to my answer !!

Factor the monomial completely 42a3b3

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

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?