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Math Help - Maximizing Income

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    Maximizing Income

    A car rental agency rents 200 cars per day at a rate of 31 dollars per day. For each 1 dollar increase in the daily rate, 5 fewer cars are rented. At what rate should the cars be rented to produce the maximum income, and what is the maximum income?
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    Quote Originally Posted by yeloc View Post
    A car rental agency rents 200 cars per day at a rate of 31 dollars per day. For each 1 dollar increase in the daily rate, 5 fewer cars are rented. At what rate should the cars be rented to produce the maximum income, and what is the maximum income?
    let x = number of $1 increases

    revenue = (number of cars rented)(daily rate)

    R = (200-5x)(31+x)

    proceed
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