A manufacturer sells Blu-ray Disc players for $150 per unit. Manufacturing costs consist of a fixed cost of $3850 and a production cost of $115 per unit.

(a) Write the cost and revenue equations.

(b) Graph both equations for up to and including 150 units on the same axes.

(c) Use the graph to estimate the number of units the manufacturer must sell to break even.

(d) Write the profit formula. 

(e) Use the profit formula to determine the manufacturer€™s profit or loss if 100 units are sold.

(f)  How many units must the manufacturer sell to make a profit of $875?

Part of the question involves determining a system of equations that models the situation.