Guys please help me with my homework

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?

Ithink i know it but i want to be sure so can you me out ?

30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.