Question

An airplane descends at a steady rate every second before landing. If you calculate the change in altitude after a certain number of seconds, will your answer be positive or negative? Explain using the sign rules of multiplication or division.

Answer 1

heres a hint:

plane is "descending"

Answer 2

not very helpful

Answer 3

it is going down right?

Answer 4

yes

Answer 5

suppose it start at 20,000 feet and 5 seconds later it is 15,000 feet
is the rate of change positive or negative?

Answer 6

a negative