Agroup of three friends share the cost of a voice recorder and andy barbara and donna each paid $12 $30 and $18, respectively, then what percentage of the cost of the voice recorder did donna pay?

Which expression is equivalent to 2x^2+7x+4?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?