Find the volume of the cylinder

Find the value of x for which line a is parallel to line b

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

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