12. Which of the following shows the domain and range of F(x) = 2 |x|?

The interval notation that shows the domain and range of the function
f(x) = 2|x| is domain = (all real numbers) and range = (all real numbers)
The domain of a function is input values "x" for which the function f(x) exists while the range of a function is the output value for which a function exists.
Given the function f(x) = 2|x|
Since the input variable is a positive value, the domain of the value will exists on all real numbers. The domain in interval notation is expressed as
The output variable is a positive value, the range of the value will exists on all real numbers. The range in interval notation is expressed as
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