You are snow skiing down a mountain that is represented by the linear model y=-30x+6000, where y is the number of feet after x seconds. Predict your elevation level in your feet if you ski 60 seconds.
To predict your elevation level after 60 seconds of skiing, substitute x=60 into the linear model y=-30x+6000:
y = -30(60) + 6000
y = -1800 + 6000
y = 4200
Therefore, after skiing for 60 seconds, your elevation level would be 4200 feet.