Given the parent functions f(x) = log3 (5x − 5) and g(x) = log3 (x − 1), what is f(x) − g(x)?

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Given the parent functions f(x) = log3 (5x − 5) and g(x) = log3 (x − 1), what is f(x) − g(x)?

a. f(x) − g(x) = log3 (4x − 4)
b.f(x) − g(x) = log3 (4x − 6)
c. f(x) − g(x) = log3 5
d. f(x) − g(x) = = log3 1/5