Final answer:
To have a total value of $12,000 after 10 years, the Clark family needs to pay approximately $74.12 into the annuity each month.
Step-by-step explanation:
To calculate the amount of money the Clark family needs to pay into the annuity each month, we can use the formula for the future value of an ordinary annuity:
![FV = P × [(1 + r/n)^(n × t) - 1] / (r/n)](https://img.qammunity.org/2024/formulas/business/high-school/cr4gj131a0d4l4xzchyn7e9eay2qn30btr.png)
Where:
FV is the future value (in this case, $12,000)
P is the monthly payment
r is the annual interest rate (7.8%)
n is the number of compounding periods per year (12)
t is the number of years (10)
Plugging in the values, we get:
![$12,000 = P × [(1 + 0.078/12)^(12 × 10) - 1] / (0.078/12)](https://img.qammunity.org/2024/formulas/business/high-school/m0f1cnqol5k5a0higuz1f4f2it7p2riuwq.png)
Solving this equation, we find that the Clark family needs to pay approximately $74.12 into the annuity each month to have a total value of $12,000 after 10 years.