thomas spent 20% of his paycheck on his friends birthday gift. if thomas worked 25 hours for $8.50 per hour, how much did thomas spend on his friends gift?

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

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)?