Question

Plsss helppp ASAP

Will mark brainleist

Answer 1

Answer:

B

Step-by-step explanation:

The average rate of change in the closed interval [ a, b ] is

$\frac{f(b)-f(a)}{b-a}$

Here [ a , b ] = [ 15, 35 ]

and f(b) = f(35) = 400 ← from graph

f(a) = f(15) = 200 ← from graph

Then average rate of change is

$\frac{400-200}{35-15}$ = $\frac{200}{20}$ = 10 m/ s → B