The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by C(x)=2x - - 26x+640, where x is the number of videos rented daily. Find the lowest cost to the nearest dollar. The lowest cost of operating the store is so

according to my calculations if its approximately given my 2x.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.