Increases in snow levels are recorded with positive numbers. decreases in snow levels are recorded with negative numbers. after a winter storm, the depth of the snow on cherry street was 10 \text{ cm}10 cm. but then, the snow started melting at a rate of \dfrac{1}{3} \text{ cm} 3 1 ? cm per hour. what was the depth of the snow on cherry street after 33 hours?