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 cm10, space, c, m. but then, the snow started melting at a rate of \dfrac{1}{3} \text{ cm} 3 1 cm start fraction, 1, divided by, 3, end fraction, space, c, m per hour. what was the depth of the snow on cherry street after 3 hours?