To highlight the quantity of interest (which is speed, v) from the formula \( d = v \cdot t \), we want to solve for \( v \).
Starting with the formula:
\[ d = v \cdot t \]
To isolate \( v \), we can rearrange the equation by dividing both sides by \( t \):
\[ v = \frac{d}{t} \]
So, the rearranged formula highlighting the quantity of interest is:
\[ v = \frac{d}{t} \]
Where \( d \) is distance and \( t \) is time.