A concert promoter sells tickets and has a marginal-profit function given below, where P'(x) is in dollars per ticket. This means that the rate of change of total profit with respect to the number of tickets sold, x, is P'(x). Find the total profit from the sale of the first 70 tickets, disregarding any fixed costs. P'(x) = 7x-1078 The total profit is $ (Round to the nearest cent as needed.)

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