Answer:
Part A: 40% are pennies
Part B: NIckels 10, Quarters 20, Pennis 20
The function and the first value stated for x are confusing.
Doing some research, I found that the problem is to evaluate the function

for x = - 1 and x 2.
The solution is:
1) For x = - 1

2) For x = 2
Answer: 5.2
Step-by-step explanation:
3*7 = 21
21/5 = 4.2