I need questions 7, 8 and 9

7. Use the Dupont identity to solve the following. The ABC Inc. has profit margin of 0.5 and equity multiplier of 1 . If its ROE is 10%, what is its asset turnover? 8. An amount of $100 invested for 5 years at the rate of 10% compounded monthly grows to what value? 9. Sally is 30 years old and has decided to start saving for retirement. Beginning in exactly one year, she will save $10,000 per year for 30 consecutive years to support their retirement. When she reaches retirement at age 60 , how much will she have saved for her retirement if the interest rate is 4% annually