I have a question about math, thank you for your help

The revenue of General Motors Company (GM) in December 2008 was $148.98 billion. Assume that GM continues to invest 3% of the 2008 revenue figure continuously throughout each year, beginning at the end of December 2008, into an account that pays interest at a rate of 4.8% compounded continuously. (a) Calculate the value of the account in December 2015. (Round your answer to three decimal places.) $ billion (b) How much would GM have had to invest at the end of December 2008, in one lump sum, into this account to build the same 7-year future value as the one found in part (a)? (Round your answer to three decimal places.) billion