To find your elevation level after skiing for 60 seconds using the linear model \( y = -30x + 6000 \), we can substitute \( x = 60 \) into the equation:
\[ y = -30(60) + 6000 \]
Now calculating the first part:
\[ -30 \times 60 = -1800 \]
Now substitute this back into the equation:
\[ y = -1800 + 6000 \]
Now, calculate the final value:
\[ y = 4200 \]
So, your elevation level after skiing for 60 seconds would be 4200 feet.