What is the equation of a line perpendicular to y=1/2x-1 through (0,6)

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

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?

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost