Suppose a firm manufactures radios and sells them for $500. The costs incurred in the production and sales of the radio are $2,000 plus $100 for each radio produced and sold. a) What is the cost function for the production of X radios.

b) What is the cost of producing 25 radios?

c) Write the revenue function for the sale of X radios.

d) What is the revenue for selling 35 radios?

f) Write the profit equation for the sale of X radios:

G) Find the break-even point algebraically:

h)How much profit is made if 150 radios are sold?