If the elliptical galaxy in Boötes, shown near the bottom of Figure 17-32 of the text, were at a distance of 1.6 billion ly, what would be the value of Hubble's constant H0? (Be careful with units.) 
Definitions:
Delay Gratification
The capacity to withstand the urge for an instant gratification in favor of a future reward.
Immediate Reward
A reward received directly after completing a task or activity, often motivating future behavior.
Overjustification Effect
A phenomenon where providing excessive external rewards for an already internally rewarding activity decreases the intrinsic motivation to perform that activity.
Opponent-process Effect
A psychological and neurological model that explains contrasting color after-images and emotional contrasts.
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