Final answer:
Tonia and her two friends make a total of 3 people in business together at the craft show, aiming to earn $25 each.
Step-by-step explanation:
The student asks how many people are in business together if Tonia sells bracelets with 2 of her friends at the craft show and they want to each earn $25. To find the number of people in business together, we consider Tonia and her two friends. This gives us a total count of 3 people working together. Each person wants to earn $25, so the total amount of money needed from selling bracelets would be 3 times $25, which is $75.