The number of plasma TV’s produced varies directly as the number of hours a 10 person assembly line works. If 20 TV’s are produced in 2 ½ hours, what is the constant of variation?

How many hours would it take to produce 135 TV’s?

The profit margin of producing x number of plasma TV’s can be modeled by the function .

What is the profit margin if 100 TV’s are produced?
What is the profit margin if 500 TV’s are produced?
What is the profit margin if 750 TV’s are produced?
For what value(s) is this function undefined?
The cost of producing plasma TV’s is modeled by the equation , where x r

Question

The number of plasma TV’s produced varies directly as the number of hours a 10 person assembly line works.  If 20 TV’s are produced in 2 ½ hours, what is the constant of variation?

How many hours would it take to produce 135 TV’s?

The profit margin of producing x number of plasma TV’s can be modeled by the function  .

What is the profit margin if 100 TV’s are produced?
What is the profit margin if 500 TV’s are produced?
What is the profit margin if 750 TV’s are produced?
For what value(s) is this function undefined?
The cost of producing plasma TV’s is modeled by the equation  , where x r