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19 March, 08:25

A candy store estimates that by charging x dollars each for a certain candy, it can sell 8-x candies each day. Use the quadratic function R (x) = - x 2 + 8x to find the revenue received when the selling price of a candy is x. Find the selling price that will give the company the maximum revenue, and then find the amount of the maximum revenue.

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  1. 19 March, 11:03
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    Selling price: x = 4

    Maximum revenue: R (x) = 16

    Step-by-step explanation:

    The revenue received when the selling price of the candy is x is expressed with the equation R (x) = - x2 + 8x, which is a quadratic equation.

    To find the value of x that gives us the maximum value of R (x), we need to find the value of x in the vertex of the quadratic equation. The formula to find this value of x is:

    x_v = - b / 2a

    where a and b are coefficients of the quadratic equation (in our case, a = - 1 and b = 8).

    So, we have that:

    x_v = - 8 / 2 (-1) = - 8 / - 2 = 4

    So the selling price of the candy that gives the maximum renevue is x = 4.

    The maximum revenue will be:

    R (4) = - 4^2 + 8*4 = - 16 + 32 = 16
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