X = 1 3 7 Help me please?

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

Jim had 15 minutes to do 5 laps around his school what would his time be

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