Which are true of the function f(x) = 49 (1/7)x? Check all that apply.




A:The domain is the set of all real numbers.



B:The range is the set of all real numbers.



C:The domain is x > 0.



D:The range is y > 0.



E:As x increases by 1, each y-value is one-seventh of the previous y-value.



F:The initial value for the function is