Question

Please help me with this ​

Answer 1

Answer: C

Step-by-step explanation:

The formula to find average rate of change is $\frac{f(b)-f(a)}{b-a}$. Since the problem is asking for the average rate of change from the second to fifth year, we plug in a=2 and b=5.

$\frac{f(5)-f(2)}{5-2}$

f(5)=420.4

f(2)=408.04

$\frac{420.4-408.04}{5-2}=4.12$

Now, we get 4.12 dollars per year for the average rate of change.