There are 3 questions please answer them all

Question 7) Find the present value of the following ordinary annuity. Periodic Payment Term Interest Rate Conversion Payment Interval Period $2200 1 year 9 years 11% semi-annually The present value is $ Question 8) Harlan made equal payments at the end of each month into his RRSP. If interest in his account is 11.8% compounded annually, and the balance after twelve years is $13,500, what is the size of the monthly payment? The size of the monthly payment is $ Question 9) A vacation property valued at $25,000 was bought for 30 payments of $1228 due at the end of every 6 months. What nominal annual rate of interest compounded quarterly was charged? The nominal annual rate of interest is % compounded quarterly