Alexia spent 3 minutes working on each of her math problems and 4 minutes on each of her science problems. her homework took her more than 60 minutes to complete. the boundary line for the inequality 3x + 4y > 60 is shown. which statement could be true in this situation? alexia completed 8 math problems and 9 science problems. alexia completed 4 math problems and 6 science problems. alexia completed 20 math problems and 10 science problems. alexia completed no math problems and 15 science problems.

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)?