8. Maria and Toni are sisters and Jacob and
Marcel are brothers. Maria's age plus Toni's
age equals 36. Jacob's age plus Marcel's age
equals 33. Maria's age plus Jacob's age equals 29.
Toni's age is 21. How old is Marcel?

Ben and cam are scuba diving. ben is 15.815.8 meters below the surface of the water. cam is 4.24.2 meters above ben. what is cam's position relative to the surface of the water? choose 1 choose 1 (choice a) a 11.611.6 meters above the surface of the water (choice b) b 11.611.6 meters below the surface of the water (choice c) c 2020 meters above the surface of the water (choice d) d 20 meters below the surface of the water