Azonic, Ltd., a clothing firm, has fixed costs of $10,000 per year. These costs, such as

rent, maintenance, and so on, must be paid no matter how much the company produces.

To produce x units of a certain kind of suit, it costs $20 per suit (unit) in addition to the

fixed costs. That is, the variable costs for producing x of these suits are dollars. These

costs are due to the amount produced and stem from items such as material, wages, fuel,

and so on. The total cost () of producing x suits in a year is given by a function :

( ) = ( ) + ( ) = 20 + 10,000. (5)

a) Graph the variable-cost, the fixed-cost, and the total-cost functions.

b) What is the total cost of producing 100 suits? 400 suits?