Suppose you have $$60$ to spend on smoothies and popcorn. The graph

below pictures your budget constraint. How much do smoothies and

popcorn cost?

Number of

smoothies

Smoothies: $$5$; Popcorn: $$4$

It is not possible to tell how much the goods cost from the information

provided.

Smoothies: $$7\mathrm{.}50$; Popcorn: $$5$

Smoothies: $$8$; Popcorn: $$12$