State the domain and range of the one-to-one functions f and f-1.f(x) = 9x - 4
A. f(x): domain (-?, ?), range (-?, -4);
f-1(x): domain (-?, ?), range (-4, ?)
B. f(x): domain (9, ?), range (-4, ?);
f-1(x): domain (-?,9), range (-?, -4)
C. f(x): domain (9, ?), range (-?, ?);
f-1(x): domain (-?,9), range (-?, ?)
D. f(x): domain (-?, ?), range (-?, ?);
f-1(x): domain (-?, ?), range (-?, ?)
Answer: D
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