4) Claire's grandfather had opened a savings account in her name when she turned 13 years of age, and deposited some money in it then. Claire is now 28 years of age. a) If her grandfather deposited $5,000 in the account, and the account paid interest of 4.5% per year, how much money will Claire be able to withdraw from the account today? b) If Claire is able to withdraw $12,000 today, and the account paid interest of 4.5% per year, how much would Claire's grandfather have deposited in the account when she was 13 years old? c) If Claire's grandfather deposited $5,000 in the account, and the account paid interest at the rate of 4.5% per year for the first 10 years, and then the interest rate increased to 5.5% per year, how much will be in the account today? d) If Claire's grandfather deposited $5,000 in the account which paid interest of 4.5% per year, and Claire withdrew $6,000 from the account when she turned 23 years of age, how much will be available in the account today