1. **State the problem:** We are given the height of a bamboo plant after $h$ hours as $12 + 1.5h$ inches. We need to find the height after 10 hours and after 2 days (48 hours). 2. **Formula:** Height after $h$ hours is given by: $$\text{Height} = 12 + 1.5h$$ 3. **Calculate height after 10 hours:** $$12 + 1.5 \times 10 = 12 + 15 = 27$$ inches 4. **Calculate height after 2 days (48 hours):** $$12 + 1.5 \times 48 = 12 + 72 = 84$$ inches 5. **Explanation:** The plant starts at 12 inches and grows 1.5 inches every hour. After 10 hours, it grows $1.5 \times 10 = 15$ inches more, totaling 27 inches. After 48 hours, it grows $1.5 \times 48 = 72$ inches more, totaling 84 inches. **Final answers:** - Height after 10 hours: 27 inches - Height after 2 days: 84 inches