Zee Corporation has developed the following cost standards for the production of its leather backpacks: Standard Quantity Standard Cost Leather 0.9 yards $22 per yard Direct Labor 13 hours $9 per hour Actual amounts Number of backpacks produced Direct labor hours incurred Yards of leather used Cost of leather purchased Direct labor cost 15,000 18,800 14,500 $20.50 per yard $10.65 per hour What are the following variances (You do not need to say Unfavorable or Favorable, if it is Unfavorable it is a positive amount, if it is Favorable be sure to show it as a negative amount. Also, include the comma for to separate the thousands, i.e. $20,000.) Materials price variance Materials quantity variance Labor rate variance - Labor efficiency variance