Identify the equations of ellipses whose major axis lengths are twice their minor axis lengths

Which polynomial function has x intercepts -1, 0, and 2 and passes through the point (1, -6)

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.