Question

The amount of radioactive uranium changes with time. The abscissas and ordinates of the points given are the time and amoung of radioactive uranimum, respectively. (0, 100), (0.5, 50) (1, 25). Which exponential function best represents the relationship between f(t) and t? A. f(t) = 100(0.25)t B. f(t) = 0.25(100)t C. f(t) = 100 (0.5)t D. f(t) = 0.25(50)t

Answer 1

The answer is A. f(t) = 100(0.25)t

This may be solved by inserting all points to your answer and sseeing if they work. Since A. f(t) = 100(0.25)t fits with all points, this best represents the relationship between f(t) and t.

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