Answer:
d = 23 + 9
Step-by-step explanation:
Imagine that we're using a point on the shore as our reference point. First the rowboat ends up 23 feet out from this reference point. Next, the boat drifts another 9 feet out in exactly the same direction as before.
The following equation represents R'ena's rowboat position:
d = 23 + 9 (measured in feet)
