8. The graph of a linear function is shown on the grid. 7 y O y - 2 9 B 7 6 5 5 4 3 2 1 х -98-7-6-5-3-2-1 2 5 6 7 8 9 O Y + 2 (+ 7) -2 -5 G O y +2 = (2x + 7) -B CLEAR ALL Which equation is best represented by this graph?

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)?