For Problem 19, find the tax amount given the original price and tax rate. Round to the nearest cent if necessary.
19. $73.81, 7.5%

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?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Use a transformation to solve the equation. w/4 = 8 can you also leave a detailed explanation on how this equation = 32