Final answer:
The expression for the total cost of a book with ten percent tax included is Total Cost = p + 0.1p.
Step-by-step explanation:
The expression for the total cost of a book with ten percent tax included can be represented as:
Total Cost = p + 0.1p
Here, p represents the price of the book before tax. To find the total cost, we add the price of the book before tax (p) to 10% of the price (0.1p). This accounts for the 10% tax on the book.
Learn more about total cost calculation with tax