A cell phone plan charges a flat monthly fee of $15.25 and an additional $0.07 per hour spent talking on the phone. Which of the following function gives the cost , c, of the cell phone plan as a function of the numbers of house , h , spent talking?

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?