In 1992, Jason bought a gallon of gas for $1.16. Yesterday, he bought a gallon of gas for $2.16.
What is the percentage increase of the price of a gallon of gas from 1992 to yesterday? If
necessary, round to the nearest tenth of a percent.
A:%46.3 B:13.8% C:53.7% D:86.2%

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)?