2x^3+4x^2-5/x+3 using long divsion

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?