Question

What is the range of `f(x) = abs(-2x-1)`?

Answer 1

`-2x-1` can be used to generate any Real number with an appropriate value selection for `x`

`abs(-2x-1)` restricts the generated values to those greater than or equal to zero (by definition of absolute value).

Range of `f(x)=abs(-2x-1)`
is `[0,+oo)`