Answer
a. See graph below
b. Domain: (-∞, ∞) Range: (-∞, ∞)
Work Step by Step
a. See graph attached below
b. $f(x) = x^4 - x^3 + x^2 + 3x - 6$
There is no restrictions on domain and range because the function in question is a polynomial.
Thus, the domain and range are both (-∞, ∞)