The demand function for a good is given by equation P=2400-8Q were P is the price per unit and

Q is the number of units sold. A total cost function TC is given by the equation TC=80-120Q+5Q2

a. Write down equation for total revenue (TR)

b. Find values of Q when TR is zero

c. Sketch TR function over the range of -2

graph.

d. Find the value of Q for which TC is zero, algebraically.

e. Sketch TC on the same graph as in part c above and mark the answer in part d on the

graph.

f. Algebraically find the value of Q for which profit is zero (break-even point).

g. Draw a separate graph Show break-even point(s) on the graph.

h. State the range of values of Q for which the company makes profit.