If a college student purchased a used car for $4000. he paid 8% down and then paid 18 monthly payments of $216.79. determine the apr of the loan to the nearest one-half of a percent.

There is no explicit formula for interest rate, so it must be found by some sort of solver. Here a TI-84 work-alike calculator financial app has been used to find the interest rate (APR) to be 7.5%.

The loan amount is 4000 less 8% of 4000, which is .08*4000 = 320. That is, the loan amount is 4000 -320 = 3680.

well my understanding of this question is they want you to use the y=14.1x -2.3 and put the coordinates they gave you onto the line segment of   y=14.1x -2.3

step-by-step explanation:

i think that you should ask google for the answer to that problem because if we don't know it google does