Question

Let f(x)=x^2-100. The average rate of change from x = -10 to x = 10 equals _____.


A. 200
B. 100
C. 0
D. -100

Answer 1

\(\sf \Large Avg.\ Rate=\frac{f(10)-f(-10)}{10-(-10)}\)

First, you have to find the values of f(10) and f(-10), then evaluate the formula above.

\(\sf f(10)=(10)^2-100= ?\)
\(\sf f(-10)=(-10)^2-100= ?\)