Complete the following calculations in an Excel file. Be sure to show and label your work for full credit. Grizzly Company produces stuffed bears. Based on its history, it typically uses 3.10 pounds of material for each bear, costing $5.75 per pound. Each bear is expected to have direct labor of 1 hour at a rate of $10.75. In the month of January, the company produced 155,000 bears. They had direct materials of 470,000 pounds, costing on average $5.95. Direct labor was 143,000 hours at an average wage of $11.00. 1. Compute the materials price variance, materials usage variance, and the total materials variance. 2. Compute the labor rate variance, labor efficiency variance, and the total labor variance. 3. Why is it important to look at the sub-variances instead of the overall variance