Factor the following polynomial by finding the gcf greatest common factor
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please help

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

What is the difference between the equations of a vertical and a horizontal line?

Express -5 2/5 as an improper fraction.