You are snow skiing down a mountain that is represented by the linear model y=–30x+6,000 , where y is the number of feet after x seconds. Predict your elevation level in feet if you ski 60 seconds.
To predict your elevation level in feet after 60 seconds of skiing, we can substitute the value of 60 for x in the linear model.
y = -30x + 6,000
Substituting x = 60,
y = -30(60) + 6,000
y = -1800 + 6,000
y = 4,200
Therefore, your elevation level after 60 seconds of skiing is 4,200 feet.