Amazon.com uses standard costing for its inventory valuation. The standard costs and actual costs for direct materials, direct labor, and variable overhead for producing 1,000 units of a product are as follows:

Cost Component	Standard Cost ($)	Actual Cost ($)
Direct Materials	$20	$22
Direct Labor	$10	$11
Variable Overhead	$5	$6

Calculate the direct materials, direct labor, and variable overhead variances.