Question

Yolanda measures the depth of the water in a reservoir. In 7 days, the depth changes from 2,366.74 ft to 2,354.63 ft. What rational number represents the average change in depth each day? A. 338.1 B. 1.73 C. -1.73 D. -338.1

Answer 1

It represents the average change in depth each day over the 7-day period.is Therefore the correct option is B. 1.73.

Step-by-step explanation:

To find the average change in depth per day, you'll need to calculate the total change in depth over the 7 days. Subtracting the initial depth (2,366.74 ft) from the final depth (2,354.63 ft) gives a total change of 12.11 ft over 7 days. To find the average change per day, divide the total change by the number of days: 12.11 ft / 7 days = 1.73 ft per day.

This result, 1.73 feet per day, represents the rational number that denotes the average change in depth daily. It's the rate at which the depth of the reservoir is decreasing each day over the given time frame.

Understanding this rate of change is essential for various reasons, including planning maintenance or assessing the impact of such changes on the reservoir's water supply or surrounding ecosystem.

Therefore the correct option is B. 1.73.