Given f(x)= -2+7 G(x) = x-1
Find g(g(f(x)))

The rows and columns of lattice points in a three-by-three square array are evenly spaced one unit apart. how many distinct triangles with at least one side of length 2 units can be drawn using three lattice points for the vertices?

Solve the system of equations. y= 2x y= x^2 - 15

What is the area of the triangle 10 13 12