1- compute the present value of the following: payment 1m$ for 4 years each with a discount rate of 20%

2- compute the annual payment for a mortgage (principal and debt service): 1m$ loan size, 7.3%, 30 years

3- compute the WACC with the following assumptions: beta 1.10, cost of equity 12% and cost of debt 9% and equal weight, corporate tax 35%

4- compute the present value of a perpetual stream of cash flow of 80.000$, growth rate 3% and WACC of 8%

5- compute the enterprise value of a company with a free cash flow of 100m$ for 5 years each and a WACC of 8% and a terminal value of 2billion$

6- compute the enterprise value of a company with a free cash flow of 10m$ for 5 years each and a WACC of 15% and a terminal value of 100m$