Help me pls. This is about Annuities and Loans

1. Ms. Palma bought a car. After paying the downpayment, the amount of the loan is P400,000 with an interest rate of 9% compounded monthly. The term of the loan is 3 years. How much is the monthly payment?
2. A high school student would like to save P30,000 for his graduation. How much should he deposit in a savings account every month for 3.5 years if interest is at 0.25% compounded monthly?
3. Suppose Mr. Yap would like to know the present value of her monthly deposit of P3,000 when interest is 9% compounded monthly. How much is the present value of her savings at the end of 6 months?
4. Find the present value of an ordinary annuity of P5,000 payable semi-annually for 10 years if money is worth 6% compounded semi-annually.
5. On his 40th birthday, Mr. Ramos decided to buy a pension plan for himself. This plan will allow him to claim P10,000 quarterly for 5 years starting 3 months after his 60th birthday. What one-time payment should he make on his 40th birthday to pay off this pension plan, if the interest rate is 8% compounded quarterly?
6. To pay for his debt at 9% compounded quarterly, Patrick committed 8 quarterly payments of P250,000 each. How much did he borrow?
7. Mr. Repozo paid P400,000 as a downpayment for a car. The remaining amount is to be settled by paying P17,500 at the end of each month for 5 years. If interest is 12.5% compounded monthly, what is the cash price of his car?
8. In order to save for her high school graduation, Marie decided to save P200 at the end of each month. If the bank pays 0.250% compounded monthly, how much will her money be at the end of 6 years?
9. Suppose Mrs. Geronimo would like to save P3,000 at the end of each month, for six months, in a fund that gives 9% compounded monthly. How much is the amount or future value of her savings after 6 months?
10. A credit card company offers a deferred payment option for the purchase of any appliance. Jack plans to buy a multi-door inverter refrigerator with monthly payments of P2,450 for 2 years. The payments will start at the end of 5 months. How much is the cash price of the multi-door inverter refrigerator if the interest rate is 6% compounded monthly?

ARE MY ANSWERS ARE CORRECT HERE?

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Question 4 Find the period of deferral in each of the following deferred annuity problem (one way to find the period of deferral is to count the number of artificial payments) Prompts Submitted Answers Sorel-annual payments of P60,000 for 3 years that will mart 5 years from 9 periods Quarterly payments of P 3.900 for # years that will what two years from 7 periods now Payments of PALOOD every 2 years for to years starting at the end of $ 2 perlods years Annual payments of PBOO0 for 12 years that will start's years from now A panods Monthly payments of P2/000 for 5 years that will start 7 months from NOW