The cost in dollars to produce x shovels in a factory is given by the function C(x) = 23x + 480. The number of shovels that can be produced in h hours is given
by the function N(h) = 30h.
10. Find the rule for C(N(h)) 11. Find the rule when h=8 hours

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?