Try another version of this question
Find the average rate of change of `f(x) = 4 x^2 - 2` on the interval `[4, b]`. Your answer will be an expression involving `b`
Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question
`4 b + 16`