How would the answer change to part a if the book value of the vending machine operation were $2,280,000 on December 31 of Year 1 instead of $2,520,000 ? Note: Use a negative sign to indicate a loss. Note: If a line item is not required, leave the answer blank (zero). How would the answer change to part a if the book value of the vending machine operation were $2,280,000 on December 31 of Year 1 instead of $2,520,000 ? Note: Use a negative sign to indicate a loss. Note: If a line item is not required, leave the answer blank (zero)