Calculus
posted by Anon .
A baseball team plays in a stadium that holds 51,000 spectators. With ticket prices at $10, the average attendance had been 49,000. When ticket prices were lowered to $8, the average attendance rose to 51,000
a. Find the demand function (price p as a function of attendance x), assuming it to be linear

You have two points on the graph:
(10,49) and (8,51)
price went down 2
attendance went up 2
So, the slope is 1, making the demand function
p49 = 1(x10)
or
p(x) = 59x
where x is measured in thousands
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