A company is considering replacing an oid piece of-machinery, which cost $597,300 and has $352,300 of accumulated depreciation to date, with a new machine that has a purchase price of $487,000. The old machine coold be sold for $63,100. The annual variable production costs associated with the old machine are estimated to be $158,500 per year for 8 years. The annual variable production costs for the new machine are estimated to be $100,500 per year for 8 years. a.1 Prepare a differential analysis dated December 10 to determine whether to continue with (Nternative 1 ) or replace (Altemative 2) the old machine. If an amount is zero, enter "0*. If required, use a minus sign to indicate a loss: a.2 Determine whether to continue with (Alternative 1) or replace (Aiternative 2 ) the old machine