PLEASE help me with this question ASAP

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?

The function models the number of accidents per 50 million miles driven as a function

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0