Suppose that for a major production company it costs $150,000 to produce a master track for a music video and $1.50 to produce each copy. 

(a) Write a cost function C that outputs the cost of producing the master track and x copies. 

(b) If the music videos are sold for $6.50 each, find a function R that outputs the revenue received from selling x music videos. What is the revenue from selling 8000 videos? 

(c) Find a function P that outputs the profit from selling x music videos. What is the profit from selling 40,000 videos? 

(d) How many videos must be sold to break even? That is, how many videos must be sold for the revenue to equal the cost?