Ineed ! on these two last questions does anyone know it

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

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

What does the sign of the slope tell you about a line?