A construction company in a small town needs to hire workers to build a new community center. There are only 4 people in town who are qualified to work: - Klara works full-time at the local gas station, earning $8.99 per hour
- Henry works full-time as an administrative assistant at the town hall, earning $19.99 per hour
- Alex works four hours a day mowing lawns, earning $11.99 per hour, and another four hours a day cleaning houses, earning $17.99 per hour
- Melody works full-time at a bank in the next town earning $22.99 per hour
What is Henry's opportunity cost per day for accepting a full time job working on the construction project? Round your answer to the nearest dollar.