Which integer represents the total change in altitude of an airplane descending 5 feet every second for 15 seconds?
A. 65
B. 75
C. –75
"descending" ... going DOWNward ... in a NEGATIVE direction
ok
-75
To find the total change in altitude of an airplane descending 5 feet every second for 15 seconds, we can multiply the rate of descent (5 feet/second) by the time it descends (15 seconds).
5 feet/second * 15 seconds = 75 feet
Therefore, the total change in altitude is 75 feet.
The correct answer is B. 75.