Devin has started a lawn care service. He will charge a mowing fee of $7 plus $2 per square yard of lawn. He also offers trimming service, at $5 plus $1 per yard of the perimeter. Using x for the length of the lawn and y for the width of the lawn, which part of the expression 7 + 2xy + 5 + (2x + 2y) represents the charge for the mowing?