Question 312115
Victor opens a savings account with $600. The account pays 5 1/2% interest, compounded quarterly. If he makes no other deposits or withdrawals, how much will Victor have in his account after 9 months?
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A = P(1 + r/n)^(nt)
P = principal amount (the initial amount you borrow or deposit) 
r  = annual rate of interest (as a decimal)
t  = number of years the amount is deposited or borrowed for.
A = amount of money accumulated after n years, including interest. 
n  =  number of times the interest is compounded per year 
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Plug in what was given and solve for t:
A = 600(1 + .055/4)^(4*(9/12))
A = 600(1 + .055/4)^(9/3))
A = 600(1 + .055/4)^3)
A = 600(1.01375^3)
A = $625.09