At the start of a month james's bank account showed a balance of $250. he deposited $45 in week 1 and withdrew $30 in week 2.
find james's bank balance at the end of week 2.
$
if james withdrew $25 in week 3, find the total bank balance at the end of week 3.
$

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)?