How do a number line help to how that 3 divided by 1/4 is equal to 3 x 4

On saturday a souvenir shop had 125 customers.sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9