# Math

A local club is arranging a charter flight to Miami. The cost of the trip is \$225.00 each for 75 passengers, with a refund of \$5.00 per passenger for each passenger in excess of 75. How many passengers must take the flight to produce revenue of \$16,000.00?

No. of passengers = 75+x
Revenue from each passenger = 225-5x
= (75+x)(22-5x)
= 16 875 - 375x + 225x - 5x^2
How do I use this equation to find the number of passengers needed to make \$16,000.00?

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1. huh? Just solve

(75+x)(225-5x) = 16000
x = 5

so, ...

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