Mrs. Gibson made an initial deposit of $500 when opening a bank account. After the initial deposit, she deposited the same amount of money each month. The table below shows the total amount of money, a, she deposited into the account after a certain number of months, t, since opening it. Table of months=4,8,12,13 Table of money=1,500, 2,500, 3,000, 3,750
Which equation models the relationship between a and t?
A: a=250t B: a=500t C: a=250t+500 D: a=500t+250
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