Write a multiplication expression to represent each equation. Then find each product and explain its meaning. (Multiplying negative and positive integers) 1. Ethan Burns 650 calories when he runs for 1 hour. Suppose he runs 5 hours in 1 week.

2. Wave erosion causes a certain coastline to recede at a rate of 3 centimeters each year. This occurs uninterrupted for a period of 8 years.