The income of a small business for several years is given in the table below. Year Thousands of Dollars 1970 9.2 1971 53.8 1972 69.4 1973 67.2 1974 62.4 1975 62.6 1976 78.8 1977 125 a) Perform regression to find a cubic polynomial that fits the data. Use years since 1970 as your inputs. p(x) Round all values to 4 decimal places. b) Use the model to predict the income of the business in 1980. thousand Round to 2 decimal places. c) Use the model to predict when the business income will reach $1,000,000. Round to the nearest whole year