I need help if you are correct I will mark you as brainlest

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

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?