Answer:
According to each choice, this is the result: a) 15% annual interest rate b) 35,29% annual interest rate and c) 26,62% annual interest rate.
Explanation:
In choice a) you receive 8.000 but paid 9.200 (8.000 capital + 1.200 interest). In choice b) Even though the loan has the same value, you receive 6.800 (8.000 capital -1.200 interest) and you have to pay 9.200 (8.000 capital + 1.200 interest). In choice c) You receive 8.000 but monthly you have to pay $766,67 of instalments for 1 year. So you will pay 9.200 in total at the end (8.000 capital + 1.200 interest) but early payments than choice a) and in finance money is value in time towards the reform and respect of the inmate population.