Question 1191394:  The manufacturer of an energy drink spends $1.50 to make each drink and sells them for $2. The manufacturer also has fixed costs each month of $5,000. 
(a) 
Find the cost function C when x energy drinks are manufactured. 
C(x) =  
  
(b) 
Find the revenue function R when x drinks are sold. 
R(x) =  
  
(c) 
Show the break-even point by graphing both the revenue and cost functions on the same grid. (Plot each function as a line, not a ray.)
 
(d) 
Find the break-even point. Interpret what the break-even point means. 
When___energy drinks are sold, the cost and revenue equal $___. 
 Answer by Theo(13342)      (Show Source): 
You can  put this solution on YOUR website! c(x) = 5000 + 1.5 * x 
r(x) = 2 * x 
break even when r(x) = c(x) 
this means: 
5000 + 1.5 * x = 2 * x 
subtract 1.5 * x from both sides of this equation to get: 
5000 = .5 * x 
solve for x to get: 
x = 5000 / .5 = 10,000 
break even is when x = 10,000 drinks are made and sold. 
when x = 10,000: 
c(x) = 5000 + 1.5 * 10,000 = 20,000 
r(x) = 2 * 10,000 = 20,000 
revenue equals cost. 
that's the break even point. 
there is no profit and no loss. 
make and sell more than 10,000 units each month and you have a profit. 
make and sell less than 10,000 units each month and you have a loss. 
 
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