If f(x) is a function whose domain is [-1, 9], and g(x) = f(x^2), then the domain of g(x) is an interval of what width?

[0, 81]

x^2 can't be negative, so the lowest value is 0, 0^2.

The highest x^2 can be is 81, 9^2.

=^._.^=