Answer:
-4
Step-by-step explanation:
The average rate of change from x=a to x=b of f(x) is 
The given function is
.
.
.
The average rate of change from x=3 to x=4 is given by:
I cant see the image b, any way u can type it outp
Answer:
$33.60
Step-by-step explanation:
First we take 80% of $40.
1. $40 * 0.80 = $32
Next we take 105% of $32.
2. $32 * 1.05 = $33.60
Substitution or elimination