Quickly ! tanya drove 3 1/2 hours and used 1/3 tank of gas. for how long could tanya drive using 1/2 tank of gas? enter your answer as a mixed number in simplest form in the box.

Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0