the revenue from selling x shirts is r (x) = 12x. The cost of buying x shirts is c (x) = 5x + 20. The profit from selling x shirts is p(x) = r(x) - c(x). What is p(x)?

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

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap

Since we have computer algebra systems that can solve polynomial division problems for us, why is it necessary to learn how to do these things by hand?