Which is an equation for the given word problem? After Nancy deposits her birthday gift of $20.00 into her savings account, her balance is $225.50. Which equation can be used to find the amount, n, in her account before she made the deposit?
a. n + 225.50 = 20.00
b. 20.00 – n = 225.50
c. 20.00 + n = 225.50
d. n – 225.50 = 20.00