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In scientific notation, how long does it take for a car to travel 280 miles at a speed of 50 miles per hour?

$ 2.016 \times { 10 }^{ 4 } \text{ seconds}$

$ 0.2016 \times { 10 }^{ 5 } \text{ seconds}$

$ 20160 \text{ seconds}$

$ 5.6 \times { 10 }^{ 1 } \text{ hours}$

$ 56 \times { 10 }^{ -1 } \text{ hours}$