4. A general contractor has a contract to construct an electric transmission line. The original estimate for the power line was $50,000. Two change orders were approved for additional work - one in the amount of $2,100 and one in the amount of $3,600. The general contractor did not use any subcontractors or issue any purchase orders. The power line has been completed by the general contractor at a cost of $55,000. What is the variance on this project? Did the general contractor finish over or under budget