A triangle flower bed has a perimeter of 15cm the drawing has a scale of 1:200. What is the perimeter of the actual flower bed

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.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

What is the equation of a line that passes through points (0, 4) and (-4,-8)?