Acircle is centered at (2, -5) and has radius 3. write its equation in standard form. a) (x + 2)2 + (y - 5)2 = 3 b) (x - 2)2 + (y + 5)2 = 3 eliminate c) (x + 2)2 + (y - 5)2 = 9 d) (x - 2)2 + (y + 5)2 = 9

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)?