Final answer:
The rate of change in elevation for Mount Zembat in Alaska is 0.05 feet per year, calculated by dividing the total change in elevation, 2 feet, over the 40-year period.
Step-by-step explanation:
To calculate the rate of change in elevation for Mount Zembat in Alaska, we take the difference in elevation over the time period and divide it by the number of years. Forty years ago, the mountain was measured at 7600 feet, and today it is measured at 7598 feet. Therefore, the elevation has decreased by 2 feet over 40 years.
The rate of change per year is calculated as follows:
Rate of change = (Initial elevation - Current elevation) / Time
Rate of change = (7600 feet - 7598 feet) / 40 years
Rate of change = 2 feet / 40 years
Rate of change = 0.05 feet per year
So, the rate of change in elevation for Mount Zembat is 0.05 feet per year.