2(x+4)+4x

simplify expression

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

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 the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?