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Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true

For which pairs of functions is (f•g)(x)=12x? f(x)=3-4x and g(x)=16x-3 f(x)=6x2 and g(x)= 2/x f(x)= and g(x) = 144x f(x)=4x and g(x) =3x

Answer asap! due in 30 minutes! ! 8th grade math