1. Calculate 80% of 20. Formula: $\text{Percentage value} = \frac{\text{Percentage}}{100} \times \text{Total}$ Calculation: $\frac{80}{100} \times 20 = 16$ Answer: 16 2. Calculate 8% of 8.50. Calculation: $\frac{8}{100} \times 8.50 = 0.68$ Answer: 0.68 3. Given 220 yards, no operation requested. Answer: 220 yards 4. Calculate 20% of 30. Calculation: $\frac{20}{100} \times 30 = 6$ Answer: 6 5. Calculate what percent 9.18 is of 20. Formula: $\text{Percentage} = \frac{\text{Part}}{\text{Whole}} \times 100$ Calculation: $\frac{9.18}{20} \times 100 = 45.9$% Answer: 45.9% 6. Calculate 16% of 288. Calculation: $\frac{16}{100} \times 288 = 46.08$ Answer: 46.08 7. Numbers given: 126, 102, 141. No operation requested. Answer: 126, 102, 141 8. No data provided. Answer: No data 9. Numbers given: $\frac{3}{2}, 0, -1, \frac{2}{3}$. No operation requested. Answer: $\frac{3}{2}, 0, -1, \frac{2}{3}$ Rectangle with one side labeled 2.5 m. No further info or question. Answer: Rectangle side = 2.5 m