The total cost (in dollars) for a company to manufacture and sell x items per weeks is C = 60x + 300, whereas the revenue brought in by selling all x items is R = 100x - 0.5x2. How many items must be
Sold to obtain a weekly profit of $300? Profit - Revenul-cost

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?