Wendy spent $9 from her savings account on a craft kit. Then, she earned $15 babysitting for her cousin and put it in her savings account. What is the overall change to Wendy's saving account? Which statements are true about this problem?

There is more than one correct answer. Select all that apply.

One addend is −15.
One addend is −9.
Solve 9+(−15) to find the amount the account changed by.
The total changed by an amount less than $15.
Wendy's savings account increased by $6.