Hello, I have some finance question that I stuck on them please help me to answer them as soon as possible

2- Dan is managing a small office building and lease states that rents can be paid monthly at the rate of $2500/month and that it covers a period of 2 years. Given a discount rate of 10% what is the current value of the lease?

3- The net rent per square foot on your office building for the next three years is $10.25 psf , 11psf, and 12.5o psf. What is the average rent per square foot?

10- Given the following information calculate leasing agents commission in dollar terms lease term:10 years, monthly rent: $5000 commission3%.

Tank you