Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x. f(x)
= 9x + 3 and g(x) = x-3/9

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