Question

lake powell
in the year 1998, the surface elevation of lake powell was 3806 feet above sea level. in the year 2001, the surface elevation of lake powell was 3573.2 feet above sea level.
interpret the rate of change in this situation.
the surface elevation of lake powell is select an answer at a rate of select an answer
question help: video message instructor

Explanation:

Step1: Calculate time interval

The time from 1998 to 2001 is $2001 - 1998=3$ years.

Step2: Calculate elevation change

The change in elevation is $3573.2 - 3806=- 232.8$ feet.

Step3: Calculate rate of change

The rate of change of elevation is $\frac{-232.8}{3}=-77.6$ feet per year.

Answer:

The surface elevation of Lake Powell is decreasing at a rate of 77.6 feet per year.