Bob is planning to start an IT business, servicing computers that are infected with viruses. To start his new enterprise, Bob estimates that he will need to spend $5,000 on equipment $6,000 on premises, $4,000 on advertising. All of these costs are fixed. He is planning on charging his customers $250 each to fix an infected computer. For each computer that he fixes, he must spend $25 on parts and software. Suppose we let x be the number of computers that Bob fixes. If Bob only fixes 50 computers, what is his total loss?