Solve the problem.The half-life of carbon-14 is 5700 years. Find the age of a sample in which 8% of the radioactive nuclei originally present have decayed.
Fill in the blank(s) with the appropriate word(s).
686 years
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Solve the proportion.
= 
A. 20
B. 
C. 
D. 
Provide an appropriate response.If f(a) = 3 and f(x) is increasing on the interval [a, b], then which method of estimating the area under the graph of f(x) and above the x-axis will yield the highest value? Assume that n = 10 in all cases.
A. Using midpoints B. Using left endpoints C. Cannot be determined D. Using right endpoints
Find the intervals on which the function is continuous.y = 
- 5x
A. continuous everywhere B. discontinuous only when x = -6 C. discontinuous only when x = -1 D. discontinuous only when x = 1
Provide an appropriate response.True or false? If f is a one-to-one function and the graph of f lies completely within the second quadrant, then the graph of f-1 lies completely within the first quadrant.
A. True B. False