Joy is training for a triathlon. She runs a distance of 2x miles, cycles a distance of (x2 + 7) miles, and swims a distance of (x − 2) miles. Which simplified expression is equivalent to the total distance, in miles, Joy covers? x2 + 3x + 5 x2 + 3x + 9 3x2 + 5 3x2 + 9