Eddie had a favorable simple annual interest rate on a used car loan, but he can’t remember what it was. his paperwork shows that he originally borrowed s4000 and paid a total of $1280 in interest on the 4-year loan. what was eddie’s annual interest rate?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?