Help me out real quick please

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?