How can I calculate the zeros of x^3+3x^2-4? I know the answers (x1= -2 and x2= 1) but I need to show why these are the zeros.

Me #1 using vocabulary words, including the word “congruent”, state why the measure of angle d is 120 degrees. #2 what is the measure of angle e and why?

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?