Richard deposits $5400 and got back an amount of $6000 after a year. Find the simple interest he got. Question 2 Suppose you were to receive $1,000 at the end of 10 years. If your opportunity rate (discouni rate) is 10 percent, what is the present value of this amount if interest is compounded: a) Annually? b) Quarterly? Question 3 Khaled plans to buy a car on 26/02/2025. He expects the price of the car will be SAR150,000. Today, 26/02/2023 he can save his money in an account which earns him 10% return annually. His uncle informs him that he will contribute SAR10,000 to Khaled's savings on 26/02/2024. How much money should he save now to reach the amount to purchase the car. Question 4 Joe Hernandez has inherited $25,000 and wishes to purchase an annuity that will provide him with a steady income over the next 12 years. He has heard that the local savings and loan association is currently paying 6 percent compound interest on an annual basis. If he were to deposit his funds, what year-end equal-dollar amount (to the nearest dollar) would he be able to withdraw annually such that he would have a zero balance after his last withdrawal 12 years from now