If f(1)=4 and f(n) = 2f(n-1) + 3, then f(4)=

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?

Simplify 1 divided by 2/3 x (-3) divided by 1/6 x (-10)

Harold moves no more than 43 of his sheep and goats into another field fewer then 22 of his animals are goats