Please help me here in an algebraic maze that I hardly understand, please help me, my time is running out on a math test.

Use the x-intercept method to find all real solutions of the equation. x^3-10x^2+27x-18=0

Graph the line y=4/3 x+1 . use the line tool and select two points on the line.

What should be done to both sides of the equation in order to solve -5m = -40? a) multiply by -5. b) divide by -5. c) multiply by -40. d) divide by -40.