Question

Melvin Roger bought a new car for a prive of $8,599 putting down $1,000 and financing the remainder with 60 monthly payments at $180.84. What is the APR?

Answer 1

The "remainder" was $7,599. This was the amount financed. You need to work backwards from the fact that the monthly payments are $180.84, for 60 months, and that zero will be owed on the loan after those 60 payments.

Do you have access to a list of financial formulas? You're likely to find the correct one if you have such a list.