Please see screenshot data and assist with the regression to answer the 4 questions below. View the table listing the value of ice cream sales, the population (varies because of tourism) and the temperature in Sorriento each week during the summer of 2014. Please show step by step if possible so I can learn this, as other sites like Chegg were no help. Thank you!

1. Estimate the quadratic model: IC= a +b*P+c*T+d*T^2. Report the estimate ofa.
2. Estimate the quadratic model: IC= a +b*P+c*T+d*T^2. Report the estimate ofb
3. Estimate the quadratic model: IC= a +b*P+c*T+d*T^2. Report the estimate ofc.
4. Estimate the quadratic model: IC= a +b*P+c*T+d*T^2. Report the estimate ofd.

Week Ice Cream Sales (IC) |Population (P) Temperature (T) 37268 104734 79.7 37092 98642 73.6 37157 106520 81.5 37246 104507 79.5 37346 101716 76.7 37351 102917 77.9 37298 102927 77.9 8 37215 99342 74.3 9 37104 107371 82.4 10 36141 92070 67.1 11 36539 93610 68.6 12 36927 108990 84.0 13 36974 97145 72.1 14 36484 94152 69.2 15 35993 90700 65.7 16 37027 108645 83.6 17 36998 107752 82.8 18 35912 90315 65.3 19 35988 90934 65.9 20 36690 94837 69.8