A car rental company charges an initial fee plus an additional fee for each mile driven The charge depends on the type of car economy or luxury The charge E in dollars to rent an economy car is given by the function E 0 70M 11 95 where M is the number of miles driven The charge L in dollars to rent a luxury car is given by the function L 1 15M 16 40 Let C be how much more it costs to rent a luxury car than an economy car in dollars Write an equation relating C to M Simplify your answer as much possible C