Since the functions represent the heights of the rockets, and we are trying to find when the heights are the same, we essentially just want to know where the functions equal each other.
To find this, let's set both functions equal to each other and solve:
Set up equation
Add to both sides of the equation
Subtract from both sides of the equation
Divide both sides of the equation by 8
Our answer is 9/8 seconds, or approximately 1.13 seconds.