A telemarketer makes calls from he home. She earns $240 per month plus a commission of 5% on her sales. Her employer also reimburses her for long distance telephone charges for calls made for the company. Last month she received a check for $256.65, which included a reimbursement of $8.95. What was the total of her sales?

240 + .05x + 8.95 = 256.65

Now just find x