Question

Which are true of the function f(x)=49(1/7)?select three options. 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 increases by 1, each y value is one -seventh of the previous y-value.

Answer 1

A D E

Explanation:

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Answer 2

A,D and E

Explanation:

We are given that a function

`f(x)=49((1)/(7))^x`

The given function is exponential function .

The exponential function is defined for all real values of x.

Therefore, domain of f=Set of all real numbers

Substitute x=0

`y=f(0)=49>0`

Range of f is greater than 0.

x=1

`y(1)=(49)/(7)`

x=2

`y=49((1)/(7))^2=(1)/(7)y(1)`

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

Therefore, option A,D and E are true.