Julie usd 12 3/4 gallons of water on her garden on monday. she used 15 1/4 gallons of water on tuesday what is th total amount of water julie used to water her garen on monday and tuesday

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