I'm organizing workshops.

- Base fee is $100 / participant
- Material costs are $250 / participant
- An instructor will cost a flat $10k, and an additional $1000 / participant

The total cost for a workshop as a function of the number of participants is

100x + 250x + 10,000 + 100x = 450x + 10,000

For three workshops with 20 people, the costs are 3 * (450*20 + 10000) = $57,000.

Correct?