Consider the following (not real) demand function for hotel rooms at the Planet Hollywood on the Las Vegas Strip 9D = 140 - 3 5PB where p is the price of a hotel room and pp is the price of admission to Britney Spears' "Pieces of Me" show. Let p = 100 and PB = 75. Calculate the cross-price elasticity of demand with respect to PBT. Are the hotel room and the show substitutes or complements? Complements