What is the solution of 2x/5−x/2=40 ?

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

Factor the polynomial expression x6 – x3 – 20

Me i'm timed right now! there's 4 answer