Your T-Shirt Operation Is Doing a Booming Trade $R = \$$

Short Answer

Your T-shirt operation is doing a booming trade. Last week you sold 70 tie-dyed shirts for $18 each, 55 Suburban State University crew shirts for $9 each, and 50 lacrosse T-shirts for $14 each.
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Use matrix operations to calculate your total revenue for the week.
​ $R = \$$ __________