The length of marshall's rectangular poster is 2 times its width. if the perimeter is 24 what is the area of the poster

Agrocery store has 12 lb of trail mix that is 10% banana chips. the store's manager would like to add banana chips to bring the new mix up to 25% banana chips. write and solve a system of equations to find out how many pounds of banana chips manager needs to add.

Which expression is equivalent to? assume x > 0 and y > 0.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.