Which is bigger 0.81 or 0.808

Which of the following represents the range of the graph of f(x) below

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?

If f(x) = 6x – 4, what is f(x) when x = 8? a2 b16 c44 d52