one month hans rented 2 movies and 12 video games for a total of $81 . the next month he rented 5 movies and 3 video games for a total of $27. find the rental cost for each movie and each video game
rental cost for each movie: $
rental cost for each video game: $

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.