1. **Problem Statement:** Arrange the students from lowest to highest based on money spent and calculate the percentage of the $150 gift certificate each person used. 2. **Step 1: Arrange from lowest to highest money spent.** - Meryl Streep: $67.40 - Justin Bieber: $72.83 - Denzel Washington: $100.97 - Uma Thurman: $127.00 - Jaoquin Pheonix: $138.90 3. **Step 2: Calculate the percentage of the gift certificate used by each person.** The formula for percentage used is: $$\text{Percentage used} = \left(\frac{\text{Money Spent}}{150}\right) \times 100$$ 4. **Calculations:** - Denzel Washington: $$\frac{100.97}{150} \times 100 = \frac{100.97}{150} \times 100$$ $$= \cancel{\frac{100.97}{150}} \times 100 = 67.31\%$$ - Justin Bieber: $$\frac{72.83}{150} \times 100 = 48.55\%$$ - Uma Thurman: $$\frac{127.00}{150} \times 100 = 84.67\%$$ - Meryl Streep: $$\frac{67.40}{150} \times 100 = 44.93\%$$ - Jaoquin Pheonix: $$\frac{138.90}{150} \times 100 = 92.60\%$$ 5. **Final answers:** - Order from lowest to highest spent: Meryl Streep, Justin Bieber, Denzel Washington, Uma Thurman, Jaoquin Pheonix. - Percentages used: - Denzel Washington: 67.31% - Justin Bieber: 48.55% - Uma Thurman: 84.67% - Meryl Streep: 44.93% - Jaoquin Pheonix: 92.60% This shows how much of the $150 gift certificate each person used during the holidays.