If there is 5 students and 2 ate pizza how many would get pizza and 3 came back after 2 hours how many pizza would be left

Asystem of equation is shown below 6x - 2y equals 3 . and 5x + 3y equals 4. would you solve by substitution or elimination? and why

3. solve the given inequality and graph the solution on a number line.

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.