the altitude of an airplane is decreasing at a rate of 40 feet per second. what change in the altitude of the airplane over period of 41 seconds? A. 1,640 feet B. 81 feet C. -1, 640 feet D. -81 feet
The answer would be C, since the airplane is going down at a rate of 40 feet per second and the amount of time it decreased was 41 seconds, you would multiply -40 x 41 which equals to -1,640. I hope I helped!