Final answer:
The owner of a laundromat would purchase dry-cleaning equipment and supplies
Step-by-step explanation:
The owner of a laundromat who dry-cleans clothing belonging to others would purchase dry-cleaning equipment and supplies.
Dry-cleaning equipment and supplies are essential for providing dry-cleaning services. These include machines and chemicals specifically designed for removing stains, odors, and dirt from delicate fabrics and garments.
Industrial washing machines are typically used in laundromats for regular washing and not for dry-cleaning. Vending machines for laundry detergent and commercial sewing machines are also not directly related to providing dry-cleaning services.