12. [-/3 Points] DETAILS WANEFMAC7 1.4.020. MY NOTES Oil Recovery The table gives the approximate economic value associated with various levels of oil recovery in a U.S. state. Percent Recovery (%) 10 40 50 80 Economic Value ($ billions) 200 900 1,000 2,000 Find the regression line. d(r) = Use the regression line to estimate the economic value (in billions of dollars) associated with a recovery level of 70%. Ira $ billion