[15 Points] The table below shows the per capita consumption of ice cream selected years since 1990. (a) Let x represent the number of years since 1990 and use Excel to find a cubic regression polynomial for the per capita consumption of ice cream. (b) Use the polynomial model from part (a) to estimate (to the nearest tenth of a pound) the per capita consumption of ice cream in 2025. Year Ice cream (pounds) 1990 18.1 1995 18.8 2000 15.3 2005 14.7 2010 15.7 2015 14.6 2020 12.9