please help with these questions

Chris plans to purchase a house and needs to save $250,000 for a down payment over the next five years. He already has $100,000 saved. What amount would he need to save monthly if his savings can earn 5.5% compounded quarterly? 9) For the past five years, Taylor has deposited $125 at the end of every month into an investment. The investment earns 6.25% compounded semiannually. How much is her investment worth today? Round to two places after the decimal. 10) With a down payment of $5,000, the payment on a five-year lease of a vehicle with a MSRP of $55,000 is $691.99 due at the beginning of every month. If the interest rate on the lease is 3.99% compounded monthly, what is the residual value of the vehicle at the end of the lease. Round your final answer to the nearest dollar. 7) Larry wins $80,000 in the lottery. He invests the total amount in a GIC that earns him interest of 4.5% compounded quarterly. Two and a half years later he begins to deposit $1,000 at the end of every 6 months and now earns 5.25% compounded annually. What is the value of William's investment 6 years from the original investment date? Chris plans to purchase a house and needs to save $250,000 for a down payment over the next five years. He already has $100,000 saved. What amount would he need to save monthly if his savings can earn 5.5% compounded quarterly? 9) For the past five years, Taylor has deposited $125 at the end of every month into an investment. The investment earns 6.25% compounded semiannually. How much is her investment worth today? Round to two places after the decimal. 10) With a down payment of $5,000, the payment on a five-year lease of a vehicle with a MSRP of $55,000 is $691.99 due at the beginning of every month. If the interest rate on the lease is 3.99% compounded monthly, what is the residual value of the vehicle at the end of the lease. Round your final answer to the nearest dollar. 7) Larry wins $80,000 in the lottery. He invests the total amount in a GIC that earns him interest of 4.5% compounded quarterly. Two and a half years later he begins to deposit $1,000 at the end of every 6 months and now earns 5.25% compounded annually. What is the value of William's investment 6 years from the original investment date