Ax + by = c solve for y

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

In the geometric progression –3, 12, −48… what term is 3,072?