please help me to do this one. They all connected from one another please give me exact solution on how you came up with that answer. Thank you!

Thats what the teacher give us

Answer the following questions on cash flow analysis. These questions are not in the course text. 6) What is the present value of the following payment series when the interest rate is 3%: [3] YR1 = $200 YR2 = $100 YR3 = $370 YR4 = $370 YR5 = $370 YR6 = $-300 7) Convert the above payment series to a uniform payment series over 5 years, starting at year 1. 8) Convert the payment series in question 6 to a uniform payment series over 3 years starting at year 3. [3]