A certain mountain has an elevation of 19 comma 820 feet. In 1915, the glacier on this peak covered 10 acres. By 2004 this glacier had melted to only 1 acre.(a) Assume that this glacier melted at a constant rate each year. Find this 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 1915 . The yearly rate of change is nothing 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 1915?nothing