A skydiver's parachute opened at 3000 feet. Thirty seconds later, the skydiver's height was recorded at 2500 feet. What is the rate of change and what does it mean in this situation? A.
503; descending 50 feet every 3 seconds
B.
−503; descending 50 feet every 3 seconds
C.
1003; descending 100 feet every 3 seconds
D.
−1003; descending 100 feet every 3 seconds