Solve the problem.An artifact is discovered at a certain site. If it has 61% of the carbon-14 it originally contained, what is the approximate age of the artifact? (carbon-14 decays at the rate of 0.012% annually.)
A. 4119 yr
B. 3250 yr
C. 1789 yr
D. 5083 yr
Answer: A
Mathematics
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Compute the gradient of the function at the given point.
A. -36i - 16j B. -36i + 4j C. 108i - 16j D. 54i - 16j
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Provide an appropriate response.A bricklayer plans to build an arch in a garden with a span (s) of 1 m and a radius (r) of 
m. How high (h) is the arch? Use the formula h2 - 2hr + 
= 0
A. 1.0 m B. 0.5 m C. 2.4 m D. 0.25 m
Mathematics
Write the exponential expression as a radical expression. Simplify if possible.
5/4
A. 
5 = 
B. 
5= 
C. 
4 = 
D. 
4= 
Mathematics
Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.ln e2
A. 2
B. e
C. 64
D. 8
Mathematics