Answer:
1/3 is the average rate of change
Step-by-step explanation:
Change in an interval is = Final - Initial
Since a = 4 (initial) and b = 13 (final)
f(x) = f(4) = 8 (initial)
= f(13) = 11 (final)
Substitute for the formula
[tex]A = \frac{11 - 8}{13 - 4}\\ \\A = \frac{3}{9}[/tex]
Simplify further
A = 1/3