2) A plane traveling 350 mph in still air encounters a 50-mph headwind. How long will
it take the plane to travel 430 mi into the wind? Round your answer to the nearest
tenth of an hour, if necessary.

If m 17 27 90 63 ** picture is attached

Average acceleration: i have no idea how to do this.

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103