Mason compares two plans for an online book club. Which equation can be used to solve for the number of books, b, for which the cost of Plan A equals Plan B?

The correct equation to use for solving the number of books, ( b ), for which the cost of Plan A equals Plan B is:

12b = 3b + 75

Explanation: This equation sets the total cost of Plan A, which we assume is based on a cost of 12 multiplied by the number of books, equal to the total cost of Plan B, which includes a fixed cost of 75 and a variable cost represented by 3 for each book. By solving this equation, we can find the number of books where the costs are equal.

If you need more detailed assistance on how to solve this equation, feel free to ask!