The highest monthly payment Scarlet can afford and the annual interest rate, compounded monthly, indicates that the maximum amount Scarlet can borrow is about; $12,820.79
The steps used to find the maximum amount Scarlet can borrow can be presented as follows;
The possible formula in the question, obtained from a similar question on the internet can be presented as follows;

The values of the variables obtained from the question are;
M = $200
P = The amount Scarlet can borrow
r = The monthly interest rate compounded monthly
n = The number of payments
r is; 3.9%/12 = 0.00325
n = 12 × 6
12 × 6 = 72
n = 72
Therefore;



The maximum amount Scarlet can borrow, P, ≈ $12,820.79