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Which of these statements is true for $$f ( x ) = ( \frac { 9 } { 10 } ) ^ { x }$$ ? A. The $$y$$ -intercept is $$( 0,1 )$$ . B. The domain of $$f ( x )$$ is $$x > 0$$ . The range of $$f ( x )$$ is $$y > \frac { 9 } { 10 }$$ . D. It is always increasing.