Q/ In Kessy's old kitchen, he could bake 10 cookies or mix 15 glasses of lemonade in a day. Now he has a bigger oven and kitchen.

A/ Draw Kessy's initial PPF assuming constant opportunity cost between cookies and lemonade. Label it PPF1. [For this question, let cookies be illustrated on the horizontal axis.]

B/ Given PPF1, what is the opportunity cost of producing more cookies? In other words, how much lemonade must Kessy sacrifice to produce, say, one more cookie?

C/ Draw Kessy's new PPF (label it PPF2) after he receives the new appliances.