Usain Bolt is considered to be the fastest person on earth. He holds the record for the fastest $100\,\text{m}$ (meters), which he ran in $9.58\,\text{s}$ (seconds) in $2009$. We'll assume that Bolt ran the race at a constant speed. **Which of the following equations, where $t$ represents time in seconds and $d$ represents distance in meters, describe a speed *greater* than Bolt's record-breaking speed in $2009$?**