a. The yearly increase in the average global temperature is approximately 0.02degreesF per year. (Round to the nearest hundredth as needed.) Part 2 b. A mathematical model that estimates the average global temperature, T, in degrees Fahrenheit, x years after 1950 is Upper T equals enter your response here. (Use integers or decimals for any numbers in the expression. Use the answer from part (a) to find this answer.)