A traveling wave is produced on a rope. The wave travels until it hits a wall and it is reflected. If the speed of the wave is 1.8 m/s and it takes 7.5 s to get back to the starting point, how long (m) is the rope. Round to two decimal places, do not include units.

This is a Distance/Rate equation. The wave is traveling along a distance (x) at 1.8 m/s for 7.5 s.

Distance = Rate*Time