Caroline is sky diving. With her parachute open, she descends from 12,000 feet at a rate of 13 feet per second. What is the unit rate of change for this problem situation?
A. −12,000
B. −923.08
C. −13
D. 12,000
plz help!
A. −12,000
B. −923.08
C. −13
D. 12,000
plz help!