James is researching earthquakes for a science report. He is trying to come up with his own
scale to rank the intensity of an earthquake.
He notices that the difference in the intensity
of the smallest earthquake, x, and the largest
earthquake, y, is a magnitude of several
hundred thousand. James comes up with a
scale that allows him to show these
differences and is easy to use and interpret.
Which of the following functions would best model the situation above?
A. step
B. logarithmic
C. absolute value
D. polynomial

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)?