Can someone please help me with some math questions im really stuck

Question

anonymous · Answer

Marlon has just won some money on a game show! He has the option to take a lump sum payment of $625,000 now or get paid an annuity of $4,500 per month for the next 15 years. Assuming the growth rate of the economy is 3.9% compounding annually over the next 15 years, which is the better deal for Marlon and by how much?

 Lump Sum: by $299,464.04

 Lump Sum: by $20,387.02

 Annuity: by $185,000.00

 Annuity: by $20,387.02

anonymous · Answer

i dont know how to calculate these correctly