Daily exercise on PV formulas 1-2

Please sketch the cash flow for each stream of payments below. Then compute its present value as of year 0. Round each answer to the nearest dollar.

1. A single payment of $1000 in period 2 using an interest rate of 10%.
2. The stream of payments below using an interest rate of 5%:
   
   

   Period	Payment
   1	-100
   2	-100
   3	500

3. The stream of payments below using an interest rate of 15% (note the large gaps between payments):
   
   

   Period	Payment
   0	-1000
   10	2000
   20	2000

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