What is the value of 2�� − (3�� + 1)2 when �� = −2? What is the value of 2�� − (3�� + 1)2 when �� = −2?

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?

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?