Popcorn costs $2 and movies cost $10. Suppose Robin has $50.

Write out and sketch her budget constraint for each of the following. Put Movies on the horizontal axis.

i) Prices as given.

ii) The movie store will give a 20% discount if Robin buys at least 3 movies.

iii) Popcorn is "buy one get one free".

iv) Robin has a coupon for 2 free movies.