Will give brainliest, 15 points!

Danielle is keeping track of the amount of money in her lunch account. She starts with $36 in the account and uses 3 dollars every day for lunch. Which equation below could she use to track the amount of money in her account if M=the money in her account and d=the number of days?

M = 36 + 3d
M = - 3d + 36
M = - 36 + 3d
M = 3 + 36d