Investors buy a studio apartment for $200,000 . Of this amount, they have a down payment of $70,000. Their down payment is what percent of the purchase price? What percent of the purchase price would a $70,000 down payment be?

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.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Taylor wants to paint his rectangular deck that is 41 feet long and 24 feet wide. a gallon of paint covers about 350 square feet. how many gallons of paint will taylor need to cover the entire deck? round your answers to two decimal places when necessary.