Just 7% of the atmosphere is made up of oxygen at the top of Mount Everest. If sea level atmosphere has three times as much, what percentage oxygen does the atmosphere have? (GIVING BRAINLIEST)​

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Azul has 4 green picks and no orange picks. you add orange picks so that there are 2 orange picks for every 1 green pick. how many picks are there now.

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