a. Debby has RM 1,500 in her bank account. Then, she wants to save RM 200 every month. Assume that she does not do any withdrawals transaction. i. Develop a linear model that represents the total amount of money Debby deposits into her account after m months. (2 mark) ii. Calculate the total amount in her account after 10 months. (3 marks) iii. After how many months will Debby have more than RM 4,300? (4 marks) b. Two books and a calculator costs RM 60 and three books and two calculators costs RM 105. Find the cost of a book and a calculator separately.