Please help me if u know how this is due very soon !!!

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

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

Pls yall i really need the answer fr fr