Question

How to find the average rate of change if the function​

Answer 1

Answer:

14

Step-by-step explanation:

Average rate of change is given as $\frac{f(b) - f(a)}{b - a}$

Where,

a = 4,

f(a) = f(4) = (4)² + 3(4) = 16 + 12 = 28

b = 7,

f(b) = f(7) = (7)² + 3(7) = 49 + 21 = 70

Plug in the values into the formula

Average rate of change = $\frac{70 - 28}{7 - 4}$

$= \frac{42}{3} = 14$