2d: Using the ratios below, appraise the trend (2007-09) of Flash's profitability. Cite specific ratios to justify your analysis.

Profitability Ratios
Gross margin	18.9%	15.5%	18.9%
Operating profit margin	5.6%	1.1%	5.5%
Return on sales	2.9%	0.2%	2.8%
Return on total assets	8.1%	0.4%	7.1%
Return on equity (ROE)	13.3%	0.8%	12.7%
Return on invested capital (ROIC)	9.2%	1.7%	8.5%