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2 September, 00:29

The function f (x) = 4.50x + 19 relates how much Sean pays to his scout club, f (x), to the number of patches, x, he earns in a month. What is the value and meaning of f (12) ? $73.00; this is the amount Sean pays for earning 12 patches in a month $73.00; this is the amount Sean pays for 12 months of scout club $85.50; this is the amount Sean pays for earning 12 patches in a month $85.50; this is the amount Sean pays for 12 months of scout club

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  1. 2 September, 00:38
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    Given the function: f (x) = 4.50x + 19, f (12) basically means the value that is obtained using the function, after "x" has been substituted by the value of 12. This is illustrated below:

    f (x) = 4.50x + 19

    substituting x = 12:

    f (12) = 4.50 (12) + 19

    f (12) = 73

    Explaining in words, this means that Sean pays $73 to his scout club for the 12 patches that he has earned that month.
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