6. determine whether the ordered pair(4, 2) is part of the given system of equations.
(4x = 18 – y
13x = 33 - 4y
part a: for 4x = 18 – y, the ordered pair (4, 2) -
( responses: is, is not) a solution.
part b: for 3x = 33 - 4y ,the ordered pair(4, 2) –
( responses: is, is not) a solution.
part c: therefore, the ordered pair (4, 2)
equations.
(responses: is, is not) a solution of the given system of

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)?