Practice problem
Solving Exponential Equations with Like Bases
By Alex Federspiel
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Image by Hannford via Flickr (CC BY-SA 2.0)
With the power of all six infinity stones, Thanos is said to be able to wipe out half the population with a single snap!
If Earth has approximately billion people, how many times would Thanos have to snap for there to be person left?
Round your answer to the nearest whole number.