Answer:
f(x) = 2x - 5
Step-by-step explanation:
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
The interest rate is 4<span />
The answer is either a or d but we know she did all of this for more than 52 minutes.