Answer:
s > 768 miles/hour
Step-by-step explanation:
We are given that:
1- speed of sound is 768 miles/hour
2- sonic booms are created ONLY WHEN the speed of object (s) is greater than the speed of the sound
This means that:
s < 768 miles/hour ...............> no sonic boom is created (false)
s = 768 miles/hour ................> no sonic boom is created (false)
s > 768 miles/hour ................> sonic boom is created (true)
Since we are looking for the true equation of creation of sonic waves, it would be only the last one (s > 768 miles/hour)
Hope this helps :)