Solve the system of the linear equation by adding or subtracting.

7x - y = 9
7x + 2y = 24

The number of electoral votes each state is assigned is determined by the size of its population every ten years. the chart shows the number of electoral votes california was assigned each decade of the past century. what is the 3rd quartile of the data?

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Which statements are true about additional information for proving that the triangles are congruent check all that apply