A research group is conducting a study on student test performance. The group surveys the students each morning to find out if they ate breakfast. The study compares student test scores with the percentage of mornings those students ate breakfast. Which trend line best fits the scatter plot? a. b. c. d.

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

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)?

You borrow $15000 to buy a tractor. the simple interest rate is 4%. you pay the loan off after 8 years. what is the total amount you paid for the loan