Answer:
Activity 1
1. a gain of 10 points.
2. a lost of 4 points.
3. a lost of Php30.00
4. a profit of Php28.00
5. a demotion of 400 ft.
6. 300 feet above sea level.
7. 9 degrees over zero
8. 68 degrees below zero
9. an increase of Php98.00
10. a decrease of Php75.00