Answer:
-4/3 m/s
Step-by-step explanation:
The average rate of change is slope because
[tex]\frac{\int\limits^a_b {(\frac{d}{dx}f(x)) } \, dx}{b-a} =\frac{f(b)-f(a)}{b-a}[/tex]
so
[tex]\frac{f(14)-f(11)}{14-11}= \frac{6-10}{3} = \frac{-4}{3}[/tex]
i'm assuming the units would be meters/sec
so -4/3 m/s
