A company produces very unusual CD's for which the variable cost is $8 per CD and the fixed costs are $50000. They will sell the CD's for $83 each. Let x be the number of CD's produced.

Write the total cost as a function of the number of CD's produced.

$

Write the total revenue as a function of the number of CD's produced.

$

Write the total profit as a function of the number of CD's produced.

$\

An open box is to be made from a flat square piece of material 16 inches in length and width by cutting equal squares of length from the corners and folding up the sides.

Write the volume Vof the box as a function of X. Leave it as a product of factors; you do not have to multiply out the factors.

V=

If we write the domain of the box as an open interval in the form (a,b) , then what is ?

a=

and what is ?

b=