Question

given the following functions f (x) =3x5; g (x) 7x-9, find f (x) =3

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Answer 1

$\\ \sf\longmapsto f(x)=3x-5$

$\\ \sf\longmapsto f(3)$

$\\ \sf\longmapsto 3(3)-5$

$\\ \sf\longmapsto 9-5$

$\\ \sf\longmapsto 4$