An investor has an account with stock from two different companies. Last year, her stock in Company A was worth $2150 and her stock in Company B was worth $4000. The stock in Company A has decreased 2% since last year and the stock in Company B has decreased 25%. What was the total percentage decrease in the investor's stock account?

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?