Solve the problem.Sixteen pounds of a radioactive substance loses one fourth of its original mass in 2 days. The mass m(t) remaining at time t is given by:
A. m(t) = 16e0.693t
B. m(t) = 4e-0.693t
C. m(t) = 16e-0.693t
D. m(t) = 16e0.144t
Answer: D
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A. 12 B. 15 C. 42 D. 18
Find the triple scalar product (u x v) ? w of the given vectors.u = -5i - 3j + 4k; v = 4i - 8j + 8k; w = 6i - 10j - 7k
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