Question: If r(x) = 2 – x2 and w(x) = x – 2, what is the range of (w circle r) (x)?

Answer Choices:
a. (negative infinity, 0]
b. (negative infinity, 2]
c. [ 0, infinity)
d. [ 2, infinity)

answer: $1794

step-by-step explanation:

answer: your answer is a

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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