An internet start-up predicts its revenue by a straight-line method with a slope of $7000 per month. in its 6 th month it had revenues of $45000. find an equation for the revenue r as a function of the number of months t.

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