can someone help me with how to plug either of these into a calculator, i've been trying to figure it out for almost 2 hours and am so lost and really need help. My test is tomorrow and I'm redoing old homework problems and I cant remember how I got the answers.

Ryan has an investment that is worth $7,000 and has an expected return of 18 percent. The investment is expected to pay him $9,000 in three years from today and $X in two years from today. What is X?

answer i got a few weeks ago X=$2,119.68

Jonathan bought a new IRead today from Able Emporium. He will pay $200 today to Able, will receive a rebate of $200 from Able in one year from today, and he will pay $400 to Able in three years from today. If the discount rate is 9 percent, then what is the present value of the cash flows associated with this transaction?

answer: PV=-325.29