Solve the problem.An artifact is discovered at a certain site. If it has 53% of the carbon-14 it originally contained, what is the approximate age of the artifact to the nearest year? (carbon-14 decays at the rate of 0.0125% annually.)
A. 4240 yr
B. 5079 yr
C. 3760 yr
D. 2206 yr
Answer: B
Mathematics
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dx
A. 
- 
B. 
+ 
C. 
- 
D. 
+ 
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Write the phrase as a variable expression. Use x to represent "a number."Twice a number, decreased by 8
A. 2x - 8 B. 2(x - 8) C. 2 + x - 8 D. x - 16
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Use transformations to graph the function.f(x) = 5 - e-x
A. 
B. 
C. 
D. 
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Solve by using the quadratic formula.7x2 - 35 = 0
A. ± 
B. 
C. ± 
D. ± 
Mathematics