3, -6, 12, 4, 20, what is next

30 in the diagram line e and made parallel to each other and line p and q are transversal. use properties of special angles formed by parallel lines and their transversals to find the missing angle measures. m< 3=65 m< 15=120 m< 7= m< 4= m< 6= m< 1= m< 16= m< 18= m< 21= m< 10= m< 11= m< 12=

How many $20 bills do you need to have to make $280

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2