What is the separation method of seawater?

What is the range? can’t seem to find it out

In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m

Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?