Kim has a bag of yo-yos. some of the yo-yos are red. the rest are yellow. the ratio of the number of red yo-yos to the number of yellow yo-yos is 5 : 9. if kim has a total of b yo-yos, how many more yellow yo-yos than red yo-yos are there?

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Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18