What is the value of x in 8/9x = 4/3

Just tell me how to set up the equation.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

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