Suppose that for a certain company ​C(x)=35x+300,000 represents the total cost​ function, and ​R(x)=75x represents the total revenue function. Find the​ total-profit function and​ break-even point.
Which of the following functions represents the​ total-profit function?
A) 40x-300,000
B) 40x+300,000
C) 110x+300,000