Maeve is buying lunch for her friends at a restaurant. The bill is $40, and she wants to leave a 15% tip.

Let p equal the total amount Maeve pays. Which equation can you use to find p?

A. p = 40 - 0.15(40)

B. p = 40 - 15

C. p = 40 + 15

D. p = 40 + 0.15(40)