i want to verify is correct first of all and the last question i dont understand 4,6,7,8

Font Paragraph 1. Figure out the rate of Return for each: A. you invest $10,000 for 1 year and earn $750 income (750/10000)*100 -7.5% B. you invest $500 for one year and earn $75 Income 175/500)*100-15% Which one has the better Rate of Return? - Options 2. Net incomes $ 28,910 Net Sales $600,873 Total assets 2015 $345,720 Total assets 2016 $400,654 Use the DuPont Modelto find ROL: RO(Net Income/Sales)"(Sales/Total Assets( 28,910/600873)*(600,873/(45,720+400,654/2) 7.766% 3. Find ROE Net Income $ 28,910 Total equity 2015 $225,120 -Income/Average Equity 28,910/27 Total equity 2016 $200,230 4. Cash $15.000 Accounts Receivable $25.000 Inventory $76,000 Pre-paid Insurance $10,000 Building $200,000 Accounts Payable $15,000 Notes Payable 17 months) $18,000 Wages Payable $7.000 Long term Liabilities $65,000 Owners Equity $199,000 Working Capitol (15,000+25,000+76,000+10000)-(35,000+18,000+7,000-6000 Styles Mendoza Lopez Current Ratio: CA/CL126,000/6000=2.1 Times Quick Ratio Quick Assets/Current Liabilities 5. Future value of $1,000 in 5 years at 8% 6. Future Value of Annuity of $1,000 for 5 years at 8% 7. Present Value of $15,756 that earned 10% for 4 years: 20 .720+400,654)/2)) &. If you won the $100,000 lottery and was paid $10,000 each year for 10 years and earned interest I what would the Present Value of this Annuity 0,230