Use the yоur result аnd bаr grаph frоm the previоus question to solve this problem. Write a mathematical model (a formula) that estimates the average atmospheric concentration of carbon dioxide in ppm years after 1950. Suggestion: Check your work. Since you used information for 1950 and 2015 (0 and 65 years after 1950 respectively) to compute the yearly increase, your formula should be able to compute values for those years. For the years in between, your formula should approximate the corresponding value in the graph. Finally, use your model to compute an estimate for the average atmospheric concentration of carbon dioxide in the year [y]0. Give your answer in whole parts per million.