Tritium, a radioactive isotope of hydrogen, has a half-life of 12.4 years. Of an initial sample of 33 grams, how much will remain after 69 years?
?
A. 0 grams
B. 29.1351 grams
C. 10.9074 grams
D. 8.2500 grams
E. 0.6973 grams
Answer: E
Mathematics
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Graph the function using a solid line and its inverse using a dashed line on the same set of axes.f(x) = x3 + 5
A. 
B. 
C. 
D. 
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Round the decimal to the given place value.14.12481, nearest hundredth
A. 14.12 B. 14.13 C. 14.125 D. 14.1248
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The circle graph below shows us how an average consumer spends money. Use this information for Exercises 26 through 28.
What fraction of spending goes for other and food combined?
A. 
B. 
C. 
D. 
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Write the fraction or mixed number as a percent.
A. 40%
B. 25%
C. 4%
D. 2
%
Mathematics