Question

How do you find the average rate of change of `s(t) = t^3 + t` over the interval [2,4]?

Answer 1

`29`

Explanation:

Average rate:
`color(blue)((s(4)-s(2))/(4-2))`

`s(4)=4^3+4=64+4=68`
`s(2)=2^3+2=8+2=10`

`color(blue)((s(4)-s(2))/(4-2))`
`=(68-10)/2`
`=29`