Final answer:
To find the interest rate required for Amelia to end up with $44,000 in 12 years with monthly compounding, the formula for compound interest is used. The interest rate is approximately 2.06%.
Step-by-step explanation:
To find the interest rate required for Amelia to end up with $44,000 in 12 years with monthly compounding, we can use the formula for compound interest:
A = P(1 + r/n)nt
Where:
- A = The future value of the investment ($44,000)
- P = The initial investment ($90,000)
- r = The interest rate
- n = The number of times the interest is compounded per year (12)
- t = The number of years (12)
Substituting these values into the formula, we get:
$44,000 = $90,000(1 + r/12)12*12
Simplifying the equation, we can solve for r by rearranging:
1 + r/12 = (44000/90000)1/(12*12)
r/12 = (44000/90000)1/(12*12) - 1
r = ( (44000/90000)1/(12*12) - 1 ) * 12
Using a calculator, we find that the interest rate is approximately 2.06%.