Assuming a Hubble time of 13.6 billion years and a constant rate of expansion of the universe,what was the scale factor (R_U)of the universe 10.2 billion years ago (compared to today)? A) 0.25 B) 0.50 C) 0.67 D) 0.75

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The Answer of Assuming a Hubble time of 13.6 billion years and a constant rate of expansion of the universe,what was the scale factor (R_U)of the universe 10.2 billion years ago (compared to today)? A) 0.25 B) 0.50 C) 0.67 D) 0.75

Assuming a Hubble Time of 13