Solve the problem.The charcoal from a tree killed in a volcanic eruption contained 64.9% of the 
found in living matter. How old is the tree, to the nearest year? Use 
for the half-life of 
A. 1708 years
B. 3555 years
C. 5700 years
D. 2464 years
Answer: B
Mathematics
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Use a calculator to approximate the square root to three decimal places. Check to see that the approximation is reasonable.
A. 3.321 B. 3.311 C. 3.289 D. 3.303
Mathematics
Write the first four terms of the sequence.an = (-1)n-1(4n - 5)
A. -1, 3, 7, 11 B. 1, 3, -7, -11 C. -1, -13, 7, -11 D. -1, -3, 7, -11
Mathematics
Rationalize the denominator. Assume that all variables represent positive real numbers.
A. 7
B. 7
C. 
D. 
Mathematics
Solve the polynomial equation by using the root method.
x3 + 4 = 0
A. -2 B. 2, 0 C. 2 D. 2, -2
Mathematics