Answer:
Average rate of change=-3
Step-by-step explanation:
The average rate of change is given by the relation between the values of f(x) and x, in two different points as follows:

In this case, 
Therefore,

14/7, 14/7=2 and 2/4= 0.5
Ryan bought 25 packs because 25 is equal to one-fourth.
He has 11 quarters, 9 dimes, and 55 nickels.
11x.25=2.75
9x.1=.9
55x.05=2.75
2.75+2.75+.9=6.4
s=200
b=100
1.08 s + 1.02 b = 1.08(200) + 1.02(100) = 216 + 102 = 318
Answer: 318