Adam works at a bakery. He uses 1/8 of his flour supply to make bread and 3/4 of his flour make other baked goods. If Adam used 21 pounds of flour, how much flour did he have in his supply?

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Which expression is equivalent to sq-80

Anyone know? will mark brainliest if you're correct!