Evaluate the logarithm, if possible. Round the answer to four decimal places.log 0.0743
A. -2.5996
B. -1.1349
C. -1.1232
D. -1.1290
Answer: D
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Convert to logarithmic form.41/2 = 2
A. log 2 4 = 1/2 B. log 2 1/2 = 4 C. log 1/2 4 = 2 D. log 4 2 = 1/2
Use Euler's formula to answer the question.A polyhedron has 34 edges and 15 faces. How many vertices does it have?
A. 49 B. 21 C. 47 D. 18
Decide whether or not the set is closed under multiplication.{Whole numbers}
A. Closed B. Not closed
Solve the problem.The half-life of an element is 4.2 × 1012 yr. How long does it take a sample of the element to decay to 
of its original mass? Use 
where A0 is the initial amount, T is the half-life, and t is the time. (Express results in scientific notation, rounded to the nearest hundredth.)
A. 5.07 × 1012 yr B. 2.46 × 1012 yr C. 1.21 × 1012 yr D. 1.18 × 1012 yr