A college math professor has to grade 160 exams. He gives 12 of the exams to his assistant to grade. Then, the assistant gives 14 of her exams to a graduate student to grade. How many exams does the graduate student get?

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?

I'll give brainliest if you answer right : )

Given the equation    = 5, solve for x and identify if it is an extraneous solution