Mai had $16.50. She spent $5.15 at the snack bar and $3.75 at the arcade.

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?

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.