Answer:
The overall change to Wendy's savings account is a net increase of $6.
Explanation:
1. Wendy spent $9 from her savings account on a craft kit. This means her savings account decreased by $9.
2. Wendy earned $15 babysitting for her cousin and put it in her savings account. This means her savings account increased by $15.
To calculate the overall change, we need to subtract the decrease of $9 from the increase of $15. $15 - $9 = $6
Therefore, the overall change to Wendy's savings account is a net increase of $6.