The school band is scheduled to march in the annual parade, but the band’s starting point is changed the day before the parade. the band director calls three band members. each band member calls three other band members. then these band members each call three members. how many band members, including the band director, are notified of the new starting point? a. 12 members b. 13 members c. 20 members d. 40 members

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?