precalculus
posted by kikie .
Suppose the function p= 1/8 x + 100
(0 =< x =<12) relates the selling
price p of an item to the quantity x
that is sold. Assume that p is in
dollars. What is the maximum
revenue possible in this situation?

revenue is basically selling price  cost price , ignoring some other factors
I see an equation for the selling price, but no information about the cost.