Question 5 Calculate the difference (4x2 + x - 5) – (5x2 - 1).
A
9x2 + x - 6
B
9x2 + x - 4
С
-x2 + x - 4
D
x²+x-6

What kind of bond pays interest which is exempt from tax?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

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)?