Answer:
$ 4127.73 that is what her investment will be worth after 3 years.
Explanation:
capital invested = $3345
percentage on return annual interest = 7.8%
duration of stock = 3 years
total worth of investment = ( 7.8% of $3345 ) * 3 + $3345
= ( 0.078 * 3345 ) * 3 + 3345
= 260.91 * 3 + 3345
= 782.73 + 3345
= $4127.73
after three years of investment the total worth of her investment i.e investment capital plus interest earned over time will be = $4127.73