Question: The increase in carbon dioxide (CO2) in the atmosphere is a major cause of global warming. Using data obtained by Charles David Keeling professor at Scripps Institution of Oceanography, the average amount of CO2 in the atmosphere from 1958 through 2007 is approximated by

A(t)= 0.010716t² + 0.8212t + 313.4

where A(t) is measured in parts per million volume (ppmv) and t in years, with t=1 corresponding to 1958. Find the average rate of increase of the average amount of CO2 in the atmosphere from 1958 through 2007.