2009, Form B, Question 2 · 6 points
Utility maximizing with peanuts and bananas
Use marginal utility per dollar to find a missing price and predict a response to a price change. Then use cross-price elasticity to trace a supply shock to a related good, and describe the substitution effect and real income after a price rise.
This exam had three free-response questions with 10 minutes of planning and 50 minutes of writing, and the directions suggested spending about half the time on Question 1 and splitting the rest evenly between Questions 2 and 3. The current exam has 3 free-response questions in 60 minutes. The skills these questions practice still count.
1 Read the question
The question is College Board's, from the 2009, Form B exam. It starts on page 3 of the PDF. College Board no longer posts this exam, so it opens from the copy of College Board's PDF that the Internet Archive saved on August 16, 2022.
2 Write your answer
Answer each part the way you would on the exam, in full sentences, with your work shown. Your writing saves as you type.
3 Score it
Score your answer against College Board's scoring guidelines, one point at a time. Give yourself a point only when your answer says what the guideline asks for.
Scoring guidelines (PDF, page 3)
Question, scoring guidelines: College Board, from the Internet Archive. The title, summary are ours.