Final answer:
The correct equation to model the total cost of renting a row boat based on the number of hours used is 'Cost = 16 * hours', which means the total cost increases by $16 for every hour the boat is rented.
Step-by-step explanation:
The question asks us to create an equation to model the total cost of renting a row boat based on the number of hours the boat is used. The total cost is directly proportional to the number of hours the row boat is rented, with a rate of $16 per hour. So, if 'hours' represents the number of hours the boat is used, and 'Cost' represents the total cost, then the equation reflecting the relation is:
Cost = 16 * hours
Therefore, option b) is correct. This formula means that for every hour of boat usage, $16 will be added to the total cost.