Lin is shopping with her dad and she hears him say to the salesperson how much is your commission the salesperson says the her commission is 5.5% of the selling price

Answer this question! 30 points and brainliest! only if you know the answer.

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- 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. 3- 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 part b?

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer