The table shows the total square footage (in billions) of retailing space at shopping centers and their sales (in billions of dollars) for 10 years. The equation of the regression line is y = 527.025x – 1735.456. Complete parts a and b. 5.7 5.9 5.8 5.9 6.1 Total Square Footage, x 4.9 5.1 5.2 5.3 5.4 Sales, y 891.2 932.7 995.1 1067.2 1100.3 1215.6 1280.3 1334.6 1429.4 1543.5 (a) Find the coefficient of determination and interpret the result. (Round to three decimal places as needed.)

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Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.