1. **Problem 7:** Convert 2 fl. oz. of gold paint to tablespoons. Formula: 1 fl. oz = 2 tablespoons. Calculation: $$2 \text{ fl. oz} \times 2 \frac{\text{tablespoons}}{\text{fl. oz}} = 4 \text{ tablespoons}$$ Answer: 2 fl. oz. is 4 tablespoons. 2. **Problem 8:** Convert gas usage from liters to US gallons for city and highway driving. Given: 1 US gallon = 3.78541 liters. - City driving: 8.9 L per 100 km, distance = 50 km. Calculate liters used: $$8.9 \frac{L}{100 km} \times 50 km = 4.45 L$$ Convert to gallons: $$\frac{4.45 L}{3.78541 \frac{L}{gal}} \approx 1.176 \text{ gallons}$$ - Highway driving: 7.2 L per 100 km, distance = 250 km. Calculate liters used: $$7.2 \frac{L}{100 km} \times 250 km = 18 L$$ Convert to gallons: $$\frac{18 L}{3.78541 \frac{L}{gal}} \approx 4.755 \text{ gallons}$$ Answer: City driving uses approximately 1.18 gallons, highway driving uses approximately 4.76 gallons. 3. **Problem 9:** Convert 35 US gallons to British gallons. Given: 1 US gallon = 0.832674 British gallons. Calculation: $$35 \text{ US gallons} \times 0.832674 = 29.1436 \text{ British gallons}$$ Answer: 35 US gallons is approximately 29.14 British gallons.