Katie is a seamstress who makes wedding dresses. Her monthly cost and revenue functions when make x wedding dresses can be modeled approximately by C(x) = 200 + 150x and R(x) = 700x - 35x2, respectively, where 0 ≤ x ≤ 15.
1) How many dresses should Katie make each month to maximize revenue?
2) How many dresses should Katie make each month to maximize profit?
3) Are the values the same? If not, explain why they may be different.