Joseph's lunch at a restaurant costs $13.00, without tac. He leaves the waiter a tip of 17% of the cost of the lunch, without tax. What is the total cost of the lunch, including the tip, without tax?

The total cost of the lunch, including the tip, without tax is $15.21.

Step-by-step explanation:

Given:

Joseph's lunch at a restaurant costs $13.00, without tax.

He leaves the waiter a tip of 17% of the cost of the lunch, without tax.

Now, to find the total cost of the lunch, including the tip, without tax.

Cost of the lunch without tax = $13.00.

Rate of tip on cost of lunch = 17%.

Now, to get the total cost of the lunch, including the tip, without tax:

$13.00 + 17%\ of $13.00.

Therefore, the total cost of the lunch, including the tip, without tax is $15.21.