Data for the country of Upper Mongoose are given in the table below. All figures are in billions of dollars. Category Value Net exports 50 Value of new goods and services produced in the underground economy 80 Personal consumption expenditures 350 Value of the services of stay-at-home parents 30 Gross domestic investment 100 Government purchases 50 Total 660 Instructions: In part a, enter your answer as a whole number. In parts b-c, round your answers to 2 decimal places. a. What is Upper Mongoose's GDP for the year? $ billion. b. What is the size of the underground economy as a percentage of GDP? percent. c. By what percentage would GDP be boosted if the value of the services of stay-at-home parents were included in GDP? percent