Use the following company information to calculate net cash provided or used by investing activities. (a) Long-term investments were sold for $50,500 cash, yielding a gain of $22,050. (b) Paid $71,500 cash for new machinery. (c) Sold land costing $33,900 for $39,800 cash, yielding a $5,900 gain. (d) Equipment with a book value of $194,000 and an original cost of $319,000 was sold at a loss of $26,500