A mountain rescue team records movement above the base camp as positive and movement below the base camp as negative. During a training exercise, a rescue vehicle descends \(90 \ m\) every minute for 12 minutes. It then climbs \(130 \ m\) every minute for 5 minutes. Later, the team uses another route where a total change in altitude of \(-630 \ m\) occurs uniformly over 9 minutes. The team uses multiplication and division of integers to study these changes and plan safe movement.
Answer the following questions:
(a) Find the total change in altitude after descending for 12 minutes. \(m\)
(b) Find the total upward change in altitude during the 5-minute climb. \(m\)
(c) Considering both the descent and the climb, find the net change in altitude from the starting position. \(m\)
(d) On the other route, the total change in altitude is \(-630 \ m\) in 9 minutes. Find the change in altitude per minute. \(m / min\)
Answer the following questions:
(a) Find the total change in altitude after descending for 12 minutes. \(m\)
(b) Find the total upward change in altitude during the 5-minute climb. \(m\)
(c) Considering both the descent and the climb, find the net change in altitude from the starting position. \(m\)
(d) On the other route, the total change in altitude is \(-630 \ m\) in 9 minutes. Find the change in altitude per minute. \(m / min\)