Brushes produces a premium hairbrush. Total manufacturing costs are $280,000 when 18,000 brushes are produced. Of this amount, total variable costs are $49,500. What are the total production costs when 25,000 hairbrushes are produced? Assume the same relevant range. Question content area bottom Part 1 Determine the formula, then calculate the total production costs. (Round intermediary calculations to the nearest cent and round your final answer to the nearest whole dollar.) + = Total production costs + =