题干在#13题 5)Given the graphs and what your friend knows about economics, he recommends you increase the price of adult tickets to $8 each and lower the price of a child's ticket to $3. How much could you increase total revenue if you take his advice?
A.
total revenue would increase to $440
B.
total revenue would increase to 80
C.
total revenue would increase to $11
D.
total revenue would increase to $360
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