Mathematics, 21.07.2019 19:00, Day1201

David and terri drove a small motorboat down a river with the current. the rate the boat traveled in still water was r miles per hour, and the current’s average speed was c miles per hour. it took them 1.5 hours to travel 4 miles downstream. which of the following equations can be used to represent this information?

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David and terri drove a small motorboat down a river with the current. the rate the boat traveled in...