Solve the systems of equations by graphing.

What is the perimeter of square abcd? units units 28 units 37 units

Can someone me with this problem i don't understand i need

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?