Answer:
A = $3386.75
Step-by-step explanation:
To calculate the interest we can use the following equation:

Where P is the initial amount, r is the rate and t is the number of years.
So, to find the principal, we need to subtract the down payment from the initial cost:
P = $3745 - $800
P = $2,945
Then, the total amount to be repaid will be the principal plus the interest.
Now, we can calculate the interest replacing P by 2945, r by 5%, and t by 3 years. So:

Therefore, the total amount to be repaid will be:
A = $2945 + $441.75
A = $3386.75