An article discusses the market for autographs by Mickey Mantle, the superstar center fielder for the New York Yankees during the 1950s and 1960s: "At card shows, golf outings, charity dinners, Mr. Mantle signed his name over and over." One expert on sport autographs is quoted as saying, "He was a real good signer. ... He is not rare." Yet the article quotes another expert as saying, "Mr. Mantle's autograph ranks No. 3 of most-popular autographs, behind Babe Ruth and Muhammad Ali." A baseball signed by Mantle is likely to sell for the relatively high price of $250 to $400.

By contrast, baseballs signed by Whitey Ford, a teammate of Mantle's on the Yankees, typically sell for less than $150. Use one graph to show both the demand and supply for autographs by Whitey Ford and the demand and supply for autographs by Mickey Mantle. Show how it is possible for the price of Mantle's autographs to be higher than the price of Ford's autographs, even though the supply of Mantle autographs is larger than the supply of Ford autographs?