To calculate the maximum value of Zola's investment, we can use the formula for compound interest, which is:
\[ A = P(1 + r)^t \]
where:
- \( A \) is the amount of money accumulated after n years, including interest.
- \( P \) is the principal amount (initial investment).
- \( r \) is the annual interest rate (decimal).
- \( t \) is the time the money is invested for (in years).
Given:
- \( P = 8000 \)
- \( r = 4.9% = 0.049 \)
- \( t = 7 \)
Now we can plug these values into the formula:
\[ A = 8000(1 + 0.049)^7 \] \[ A = 8000(1.049)^7 \] \[ A \approx 8000(1.403264) \] \[ A \approx 11226.11 \]
Now, rounding to the nearest ten:
\[ A \approx 11230 \]
So, the maximum value Zola can expect this investment to achieve is $11,230.