Which expressions are equivalent to 3(-2a-4)+3a choose all answers that apply:

Which expression is not a polynomial?

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?

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?