The actual direct labor wage rate is 8

The actual direct labor wage rate is 8.50 and 4500 direct labor hours were actually during the month. the standard direct labor wages is 8.00 and the standard quantity of hours allowed for the activity level of output was 5000 direct labor hours.
what was the material price variance?
What was the direct labor efficiency variance?
What was the materials quantity variance?
what is the variable overhead efficiency variance if the standard variable over head per direct labor hour is 5.00?