An electronics store sells a cell phone for $649. The expenses are 16% of the cost and the profit is 11% of the cost. During a sale, the cell phones are marked down to a sale price of $567.

• What is the cost per cell phone? Enter your answer in blank #1. (Round your answer to 2 decimal places and include the $ sign.)
• What is the rate of markdown at the sale price? Enter your answer in blank #2. (Enter your answer as a percent, rounded to 2 decimal places, and include the % sign.)
• What is the profit or loss at the sale price? Enter your answer in blank #3. (Round your answer to 2 decimal place and include the $ sign. If the answer is a loss, enter your answer with a negative sign before the $ sign in the form -$12.34.)
• What is the rate of markdown if the cell phones are sold at cost? Enter your answer in blank #4. (Round your answer to 2 decimal places and include the % sign.)