What is the value of b? 1/3 (2b +9)= 2/3 [b+9/2]

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate

What is the difference between regular convex and concave polygons

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.