2. Draw a number line diagram and write an expression to represent this situation: "On Tuesday at lunchtime, it was 29 degrees Celsius. By sunset, the temperature had dropped to 16 degrees Celsius."

Certainly! Let's break down the situation with a number line diagram and an appropriate mathematical expression. ### Number Line Diagram Since I can't draw directly, I'll describe how to create the number line: 1. **Draw a horizontal line** to represent the temperature scale. 2. **Mark two points** on the line: - **16°C** (representing the temperature at sunset) - **29°C** (representing the temperature at lunchtime) 3. **Label the points** accordingly: - Place **29°C** on the right side to indicate the higher temperature at lunchtime. - Place **16°C** on the left side to show the lower temperature at sunset. 4. **Indicate the drop** in temperature with an arrow or a line segment pointing from **29°C** to **16°C**. **Visual Representation:** ``` Temperature (°C) 16 ──────────•────────────────────────•────────── 29 Sunset Lunchtime ``` ### Mathematical Expression To represent the drop in temperature mathematically: 1. **Subtract the sunset temperature from the lunchtime temperature** to find the decrease. \[ \text{Temperature Drop} = \text{Lunchtime Temperature} - \text{Sunset Temperature} \] 2. **Plug in the given values:** \[ \text{Temperature Drop} = 29\,°\text{C} - 16\,°\text{C} = 13\,°\text{C} \] **Final Expression:** \[ 29\,°\text{C} - 16\,°\text{C} = 13\,°\text{C} \] This expression shows that the temperature dropped by **13 degrees Celsius** from lunchtime to sunset.