Final answer:
To have $11,211 in two years to pay for a cruise that costs $11,211 with an annual interest rate of 1.3% compounded monthly, you should deposit approximately $473.75 each month into your vacation fund.
Step-by-step explanation:
To calculate the monthly deposit required, we can use the formula for the future value of an ordinary annuity:
FV = P * [(1 + r)^n - 1] / r
Where FV is the future value, P is the monthly deposit, r is the monthly interest rate, and n is the number of compounding periods.
In this case, FV = $11,211, r = 1.3% / 12, and n = 2 * 12. Plugging in the values, we get:
$11,211 = P * [(1 + 0.013/12)^(2*12) - 1] / (0.013/12)
Solving for P, we find that the monthly deposit should be approximately $473.75. Therefore, the correct answer is B) $473.75.