How would i do this problem
slope= -2, y-intercept = 7

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 are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Which expression is equivalent to 3^3 + 2^2?