Please solve all parts. Please show solutions/formulas for all parts.

LO3 P10-31 Computation of Variable Cost Variances The following information pertains to the standard costs and actual activity for Tyler Company for September: chapter 10 Standard Costs and Performance Reports 373 Standard cost per unit Direct materials 4 units of material A x $3.00 per unit 1 unit of material B x $4.00 per unit Direct labor. 3 hours x $9.00 per hour Activity for September Materials purchased Material A 4,500 units x $3.10 per unit Material B 1,100 units x $4.15 per unit Materials used Material A................................... 4,150 units Material B................................... 1,005 units Direct labor used 2,950 hours x $9.40 per hour Production output 1,000 units There were no beginning direct materials inventories. Required a. Determine the materials price and quantity variances. b. Determine the labor rate and efficiency variances