Convert 45m/s to mph. Choose the best answer to two significant figures. 101mph
45mph
200mph
24mph

Explanation:

45 m/s × (3.28 ft/m) × (1 mi / 5280 ft) × (3600 s/h) = 101 mph

This is actually 3 significant figures.  To write in 2 significant figures, you must use scientific notation:

1.0×10² mph

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i would say