The grandstand at the Kennedy Space Center is located \(3.5 \mathrm{mi}\) away from the Space Shuttle Launch Pad. On a day when the air temperature is \(80^{\circ} \mathrm{F}\), how long does it take the sound from a blastoff to reach the spectators? If the launch was early on a winter morning, the temperature may be as low as \(50^{\circ} \mathrm{F}\). How long would the sound take to reach the spectators under those conditions?