Problem : Nathan and Joe are shopping for video games. Nathan's demand function for video games is Q = 30 - 3P, and Joe's demand function is Q = 48 - 4P. What will their combined demand be if the price is $5? $11?
Problem : Michelle is shopping for shirts. She chooses one, then notices that the shirts are on sale, and gets another two shirts. How can you explain this with a graph?
Problem : Jenn's parents increase her allowance, so she spends more money on candy every week. How can you explain this with a graph?
Problem : Kris and Tim's demand curves for playing cards look like this:
Tim and Kris's Demand curves for Playing Cards
Problem : Emily decides to set aside $200 from her paycheck every month. How will this affect her demand curve? (You don't have to use specific numbers, just explain)