Can somebody please answer this

If g(x) is an odd function, which function must be an even function?

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?

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way