Maggs invests $10,250 at a rate of 9%, compounded weekly. to the nearest whole dollar, find the value of the investment after 7 years.

Total = Principal * (1+ rate/n)^(years*n)
where n=52 (for weekly compounding).
Total = 10,250 * (1. 0.00173076923076923)^(364)
Total = 10,250 * 1.87658837838566
Total = 19,235.03

The answer to your question is d 68%