Help me with these four questions and thanks

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

What is the missing step in this proof ?

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