Plz !
william bought a photocopier and supplies for $162.50, which will allow him to make copies for $0.12 each. a photocopy store charges $0.21 for each copy. how many copies must william make before his total cost is less than getting copies made at the photocopy store?
a) william must make more than 1705 copies.
b) william must make more than 1915 copies.
c) william must make more than 1805 copies.
d) william must make more than 1905 copies.

Can someone me i’m confused. will give brainliest and a whole bunch of points

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?

Graph the equationy= x+3[tex]y = x + 3[/tex]