When the admission price for a baseball game was $6 per ticket, 48,000 tickets were sold. When the price was raised to $7, only 42,000 tickets were sold. Assume that the demand function is linear and that the variable and fixed costs for the ball park owners are $0.10 and $75,000 respectively.   (a)Find the profit P as a function of x, the number of tickets sold. (b) Find the marginal profits when 24,000 tickets were sold and when 48,000 tickets were sold. P'(24,000)=  per ticket P'(48,000)=  per ticket

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