When an Alvia high-speed train that is stopped in Barcelona leaves the station, its speed increases (accelerates) at a constant rate of 3,888 kilometers per hour squared (hr2km). If h is the time, in hours, it takes for the train to reach a speed of 250hrkm, which of the following equations best describes this situation?Choose 1 answer:(A) 250=603,888h(B) 250=3,888h(C) 3,888=250h(D) 250=3,888(60)h Get tutor helpA hot air balloon reaches its maximum cruising height of 1,500ft above sea level. Over the next 5 minutes it descends at a constant rate to a new cruising altitude of 1,200ft above sea level. If x represents the time, in minutes, after starting the initial descent, and y represents the height, in feet, of the hot air balloon, which of the following equations best models the situation for 0≤x≤5 ?Choose 1 answer:(A) y=1,500−5x(B) y=1,500−60x(C) y=1,500−300x(D) y=1,500−1,200x Get tutor helpA commercial airplane that is 1,500 miles into a 2,500 -mile journey is traveling at 450 knots in still air when it picks up a tailwind of 150 knots (in the same direction). If h is the number of hours remaining in the airplane's flight, which of the following equations best describes the situation?1 knot=1.15 miles per hour (mph)Choose 1 answer:(A) 1,500+690h=2,500(B) 1,500+600h=2,500(C) 1,500−600h=2,500(D) 1,500−690h=2,500 Get tutor help