Can anybody help me im super close to failing math

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]