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