To predict your elevation level after skiing for 60 seconds using the linear model \( y = -30x + 6,000 \), we will substitute \( x = 60 \) into the equation.
\[ y = -30(60) + 6,000 \] \[ y = -1,800 + 6,000 \] \[ y = 4,200 \]
Therefore, after 60 seconds of skiing, you will be 4,200 feet high.
The correct response is: After 60 seconds of skiing, you will be 4,200 feet high.