Across country skier made the following changes in altitude during a 5 hour period : up 28 meters, down 124 meters , down 40 meters, up 75 meters ,down 225 meters. what was the skiers net change in altitude?

changes in altitude of +28 m, -124 m, -40 m, +75 m, -225 m

the net change in altitude

The net change will be the total of the given changes:

... (28 -124 -40 +75 -225) m

... = (103 - 389) m

... = -286 m

The net change in altitude was down 286 meters.

A calculator will easily add signed numbers for you.

y=mx+b

step-by-step explanation:

m slope

b y-intercept