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

Compute the future value of a stream of cash flow: 1m$ for 10 years and with an interest rate of 15%.

Compute the annual payment for a mortgage (principal and debt service): 1m$ loan size, 7.3%, 30 years 4-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%

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