50 find (g-f)(x) f(x)=1/x g(x)=x^2+2x-5 a. 1/x-x^2+2x-5 b. 1/x+x^2+2x-5 c. x^2+2x-5-1/x d. 1/x+x^2-5

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