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Li can walk 2 miles in 45 minutes. At this rate how far can she walk in 135 minutes?

Step-by-step explanation

6 miles

SO first divide 135 by 45

You’ll get 3

Now using 3 we multiply that by 2

youll get 6 miles

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

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