Solve the problem.A sample of 400 g of lead-210 decays to polonium-210 according to the function given by 
where t is time in years. What is the amount of the sample after 30 years (to the nearest g)?
A. 83 g
B. 111 g
C. 1045 g
D. 153 g
Answer: D
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The velocity at t = 3 for r(t) = (2t2 + 2t + 3)i - 4t3j + (6 - t2)k
A. v(3) = 14i - 108j - 6k B. v(3) = 10i - 108j - 6k C. v(3) = 14i + 108j + 6k D. v(3) = 8i - 36j - 3k
Mathematics
Assets that contribute to creating value for customers but are not physically identifiable are known as
A. tangible resources B. intangible resources C. real options D. property, plant and equipment
Mathematics
Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.3(x - 1) = 16
A. {2.68} B. {3.52} C. {1.52} D. {6.33}
Mathematics
Write the decimal as a percent.0.07
A. 0.007% B. 7% C. 0.7% D. 70%
Mathematics