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7 November, 17:50

The cost for the olive oil used to fill the containers on the tables in an Italian restaurant is given by the function f (x) = 5x - 4, where x represents the number of quarts of olive oil and f (x) represents the quarts of oil used. If f (4a) = 80, what is the value of a?

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  1. 7 November, 17:58
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    If f (4a) = 80, then the value of "a" is 4.2

    Solution:

    Given that cost for the olive oil used to fill the containers on the tables in an Italian restaurant is given by the function:

    f (x) = 5x - 4

    where "x" represents the number of quarts of olive oil

    f (x) represents the quarts of oil used

    To find: value of "a" when f (4a) = 80

    Substitute x = 4a in given function

    f (4a) = 5 (4a) - 4

    80 = 20a - 4

    20a = 84

    10a = 42

    a = 4.2

    Thus the value of "a" is 4.2
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