Final answer:
Robin can deduct $9,500 on Schedule 1 (Form 1040), Line 15 for her self-employed SEP-IRA contributions.
Step-by-step explanation:
Robin can deduct her SEP-IRA contributions on Schedule 1 (Form 1040), Line 15, under the category of self-employed SEP, SIMPLE, and qualified plans.
Based on the information given, Robin made $6,000 in employer contributions for her employees and $3,500 in employer contributions to her own SEP-IRA. Therefore, her total deductible amount would be $6,000 + $3,500 = $9,500.
This amount should be reported on Schedule 1 (Form 1040), Line 15, along with any other deductible amounts from other self-employed plans.