Select the expressions equlvalent to 18 + 3r. Check all that are true.
36r
6r
2
22 - 6 - 4 + 9
r + 6 + + 6 + + 6
6(r + 4) – 6
3r(2r + 18) - 3r

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?