Parker Plastic, Inc., manufactures plastic mats for use with rolling office chairs. Your standard cost information for last year is as follows: 

Standard Quantity Standard Price (Rate) Standard Unit Cost Direct Materials (Plastic) 9 sf $0.92 per sf $8.28 Direct Labor 0.25 hr. $10.40 per hour. 2.60 Variable manufacturing overhead (based on direct labor hours) 0.25 hr. $1.60 per hour. 0.40 Fixed manufacturing costs $289,280 ÷ 904,000 units) 0.32 Parker Plastic had the following actual results last year: Number of units produced and sold 1,200,000 Number of square feet of plastic used 11,100,000 Cost of plastic purchased and used $9,990,000 Number of labor hours worked 302,000 Direct labor cost $3,110,600 Variable overhead cost $ 496,000 Fixed Overhead $359,000 

Required: 

Calculate Parker Plastic's variable overhead rate and efficiency variances and its over- or under-applied variable overhead.

Calculate the variable overhead rate and efficiency variances for Parker Plastic and its over- or under-applied variable overhead. 

Calculate the variable overhead rate and efficiency variances for Parker Plastic and its over- or under-applied variable overhead.

Indicate the effect of each variance by  "F" for Favorable/Overapplied and "U" for Unfavorable/Underapplied.