Consider the winter activity of skiing. Assume that the rental cost of ski equipment is $84 and the lift ticket costs $95. If you go skiing, you would wear the ski jacket you purchased last year for $148. If you do not go skiing, you could either work at your part-time job, which would earn you $180, or study at the library, which you value at $34.Suppose that you were planning to spend Saturday working at your part-time job, but a friend asks you to go skiing. What is the opportunity cost of going skiing?Enter a whole number and no dollar sign.