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12 December, 18:01

Josh mows grass to earn extra money. He charges $25.00 for each lawn. He mows at least 5 yards each week; but not more than 20 yards. The function f (x) = 25x models his income. Write the domain of the function as an inequality.

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  1. 12 December, 18:15
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    Let

    x = number of yards mowed

    The domain of the function is

    5 ≤ x ≤ 20

    If we multiply the inequality by 25, we get

    125 ≤ 25*x ≤ 500

    Which is the same as

    125 ≤ f (x) ≤ 500

    (Range of the function)

    Domain 5 ≤ x ≤ 20

    Range 125 ≤ f (x) ≤ 500
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