Refer to Example 1 on page 159. Notice that if the price
Chapter 3, Problem 31(choose chapter or problem)
Refer to Example 1 on page 159. Notice that if the price charged for the calculators is $0 or $140 the revenue is $0. It is easy to explain why revenue would be $0 if the price charged is $0, but how can revenue be $0 if the price charged is $140?
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