Final answer:
The notation ℝ₀⁺ represents the set of non-negative real numbers. The function (x) = x(x-(-1))(x-(-3)) is evaluated by substituting the given value of x into the expression.
Step-by-step explanation:
The notation ℝ₀⁺ refers to the set of non-negative real numbers, which includes all real numbers greater than or equal to zero. The function (x) = x(x-(-1))(x-(-3)) is defined from this set to itself. To evaluate this function, we substitute the given value of x into the expression. For example, if we substitute x = 2, we get (2) = 2(2-(-1))(2-(-3)) = 2(3)(5) = 30.