Question

Please help me with this problem !!!!!!

Answer 1

see explanation

Explanation:

Given

s(t) = 10t²

To find s(2) and s(5) substitute t = 2 and t = 5 into f(t)

(a)

s(2) = 10 × 2² = 10 × 4 = 40

s(5) = 10 × 5² = 10 × 25 = 250

(b)

s(5) - s(2) = 250 - 40 = 210

This represents the distance travelled in 3 hours

(c)

The average rate of change is measured as

`(s(5)-s(2))/(5-2)`

=
`(250-40)/(3)`

=
`(210)/(3)`

= 70 miles per hour