Problema Solution
A certain mountain has an elevation of19649 feet. In 1912, the glacier on this peak covered 9 acres. By 2005 this glacier had melted to only 1 acre. The yearly rate of change is
Answer provided by our tutors
Year 1 (X1): 1912
Year 2 (X2): 2005
Acres in Year 1 (Y1): 9 acres
Acres in Year 2 (Y2): 1 acre
Rate of Change = (Y2 - Y1)/(X2 - X1)= (1 - 9 acres)/(2005 - 1912 years)
= (-8 acres)/(93 years)
= -.086 acres/year