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A certain mountain has an elevation of 19,238 ft. In 1920 the glacier on this peak covered 5 acres.

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By 2004 this glacier had melted to only 1 acre.

(a) Assume that this glacier melted at a constant rate each year. Find the yearly rate.

(b) Use your answer from part (a) to write a linear equation that gives the acreage A of this glacier t years past 1920.

The yearly rate of change is ___ acres/year.
(type an integer or a decimal. Round to the nearest thousandth)
What is the equation that gives the acreage of the glacier t years after 1920? A=____.

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Solution Preview

Hi there,

Here is my explanation:

a)the range of years: 2004-1920=84

Solution Summary

The expert examines a glacier on the peak covered in 5 acres.