• 18 Questions
Wave erosion causes a certain coastline to recede at a rate of 3 centimeters each year. This occurs uninterrupted for a period of 13 years. Write a multiplication expression representing the change in the position of the coastline after that period with respect to its position before the erosion, and then determine its product.
Ernest goes to the gym every day. When he does cardio for 1 hour, he burns 575 calories. If he does cardio for 3 hours, write a multiplication expression to represent that situation, and then find its product.
Given that a submarine is descending below the sea level at a rate of 60 feet per minute, determine the depth at which the submarine will be after 10 minutes.
From the peak of a mountain, Jeffrey was hiking down at 1 650 feet per hour, and Amy was hiking down at 1 040 feet per hour. After 3 hours, how much farther from Amy was Jeffrey?
Gloria pays $190 for rent every month and $480 for mortgage twice a year. Write an expression involving multiplication and addition to describe how these expenses affect her bank account balance on a yearly basis, and then evaluate the expression.