Answer:
See below.
Explanation:
There are 12 months in 1 year.
Since her balance changes -$2,931 is 1 year, it changes 1/12 of that amount in 1 month.
1/12 * -$2,931 = -$2,931/12 = -$244.25
The change each month is -$244.25
The change in 1 month is found by dividing the change in 1 year by 12 since there are 12 months in 1 year.
In 6 months, the change is 6 times the change in 1 month.
6 * -$244.25 = -$1,465.50
The change in 6 months is -$1,465.50