(Solve this problem without a calculator

Deidre folds about 78 shirts in 1 hour at work. She works 19 hours each week. Which is closest to the number of shirts Deidre folds per week? A. 100. B. 560. C. 1,600. D. 11,200 (Solve this problem without a calculator.) Use the table to answer the question. The amount of time Samantha practiced piano each day is shown above. ................
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