If mL7=102 and mL10=102, which lines can be proven to be parallel? A. N is parallel to q
B. L is parallel to m and n is parallel to q
C. L is parallel to m
D. None of the above is correct

70.30

step-by-step explanation:

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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