1. The problem asks to write an equation representing the distance $d$ in kilometers of each bird after $t$ hours. 2. To write such an equation, we need to understand the relationship between distance, speed, and time. The general formula is: $$d = s \times t$$ where $d$ is distance, $s$ is speed, and $t$ is time. 3. Since the problem involves birds and time $t$, and the table shows numbers and operations, we assume the speed is represented by one of the numbers or expressions. 4. Without additional context, the simplest form is to express distance as the product of speed and time: $$d = x \times t$$ where $x$ is the speed of the bird in kilometers per hour. 5. This equation means the distance $d$ is equal to the speed $x$ multiplied by the time $t$. 6. If you have a specific speed value, you can substitute it for $x$ to get a numerical equation. Final answer: $$d = x \times t$$