Sid's Skins makes a variety of covers for electronic organizers and portable music players. The company's designers have discovered a market for a new clear plastic covering with college logos for a popular music player Market research indicates that a cover like this would sell well in the market priced at $20.50. Sid's desires an operating profit of 25 percent of costs, Required: What is the highest acceptable manufacturing cost for which Sid's would be willing to produce the cover? (Round your answer to 2 decimal places.) Highest acceptable manufacturing costs