Solve 4-10. I have already runned the regression

HERE IS THE TABLE PRIOR TO RUNNING THE REGRESSION

a 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 QUANTITY PRICE 3090 3059 3040 3039 2942 2934 2875 2870 2849 2842 2934 2821 2819 2791 2729 2721 2659 2633 2623 2586 2557 2517 2503 2502 AVERAGES 7.5 7.5 7.5 7.5 8.5 8.5 8.5 8.65 8.65 8.65 8.65 8.65 8.65 9.75 9.75 9.75 9.75 9.99 9.99 9.99 9.99 10.25 10.25 10.25 9.05 INCOME AD 28200 28444 28264 28259 27950 27350 27350 26850 26450 26350 26350 26200 26120 26120 26120 25970 25970 25950 25950 25750 25750 25700 25600 25500 PRICE BIG 10.55 1.85 10.45 1.75 10.35 1.75 10.3 1.5 10.3 1.35 10.25 1.25 10.25 1.25 10.25 1.25 10.25 1.2 10.25 1.2 10.25 1.15 10.2 1.15 10.15 1.15 10.1 1.1 10.1 1.05 10.1 1.05 10 0.95 10 0.95 10 0.85 10 0.55 9.75 0.55 9.75 0.55 9.65 0.55 9.6 0.16 10.12 1.09