Plzz answer fast I will mark brainliest What is the second step of a tax/tip/markup problem?

Question 3 options:

Adding the Original $ and the Tax/Tip/Markup $

Subtracting the Original $ and the Tax/Tip/Markup $

Adding the Original $ and the Percent

Subtracting the Original $ and the Percent

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?