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2 August, 03:02

Given the functions f (x) = 7x + 13 and g (x) = x + 2, which of the following functions represents f[g (x) ] correctly?

f[g (x) ] = 7x + 15

f[g (x) ] = 7x + 27

f[g (x) ] = 7x2 + 15

f[g (x) ] = 7x2 + 27

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Answers (1)
  1. 2 August, 03:31
    0
    f (x) = 7x + 13

    g (x) = x + 2

    f[g (x) ] = 7 (x + 2) + 13

    f[g (x) ] = 7 (x) + 7 (2) + 13

    f[g (x) ] = 7x + 14 + 13

    f[g (x) ] = 7x + 27

    The answer is B.
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