The top left hand graph represents the two equation. The open circle means it is less than but not equal. The closed sign always includes equal to. You have it marked correctly on the attachment I see.
Perimeter is 2L + 2W Now plugging in for values we know 42=2L + 2(7) Move the 14 to the other side to isolate the variable L 28=2L Divide by 2 L= 14 feet L is length
