3. Consider payments of $120 at the end of each month for 4 years. Find the accumulated value at the time of the last payment if interest is 8% effective per year. [5 Marks] (Pertimbangkan pembayaran $120 pada akhir setiap bulan selama 4 tahun. Cari nilai terkumpul pada masa pembayaran terakhir jika faedah 8% efektif setiap tahun.) [5 Markah] 4. Melly bought a single storey house in Taman Nasional for RM230,000. She made a 10% down payment and financed the balance through a bank loan from Maybank for 30 years. a) Find her monthly payment R if the interest rate was 7.5% compounded monthly. How much was the total interest charged? [6 Marks) b) Due to COVID-19 pandemic, Melly missed the first three payments. How much should be paid on the fourth month if she wanted to settle the outstanding arrears? [3 Marks] c) Melly decided to settle the loan in full immediately after paying for 10 years. How much is the amount that needs to be paid? [3 marks]