What is the value of b in this diagam?

12
10.2
9
8

Answer question above and explain each step : )

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

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation