3. Maxim spends their entire income on 9 sacks of acorns and 4 crates of butternuts. The price of acorns is 6 dollars per sack and their income is 90 dollars. a. Write out the budget constraint if A indicates sacks of acorns and B crates of butternuts. b. Sketch the budget constraint on a diagram (with A on horizontal axis). (and look ahead to part c) c. Suppose that their income increases to 120 but they are limited to purchasing at most 6 sacks of acorns. Draw their new budget constraint on the same diagram