Use the difference quotient of A(r)= 1tr2 to calculate the average rate of change during certain intervals. The difference quotient of A(r) is:
T(r+h) - Trở TP + 23h + )- Tr Ter2 + 2 trh + Tth? - Tir?
= 2 tr + Tth
h
h
h
The average rate of change from the interval 2 to 3 inches is
The average rate of change from the interval 2 to 2.5 is
ve square inches per inch,
square inches per inch.

For the function, f(x) = -5x 2, find f(-4).

What is the slope of the equation y =

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)?