Honesty has lunch at Olive Garden if her bill was $14.50 and she wants to leave a 20% tip, what is the amount she would leave for tip?

Which ratio is equivalent to 10: 85

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?

I’m stuck on this equation, anyone got the answer?