Question description

1. Simplify: (4x^2 + 5x) + (x^2 – 5x + 1)2. A plane flies 420 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 23 mph, what is the speed of the plain in still air?3. Decide whether the lines are parallel, perpendicular or neither.x + 4y = 7 and 4x – y = 3

~~~For this or similar assignment papers~~~