Find the curvature of the space curve.r(t) = (7 t sin t + 7 cos t)i + 7j + (7t cos t - 7 sin t)k
A. ? = 
B. ? = 7t
C. ? = 
D. ? = - 
Answer: A
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Provide an appropriate response.Write a polynomial for the volume of the region between the small box and the large box. 
A. (5x - 2)(4x2 + 10x + 25) B. (5x + 2)2 C. (2x - 5)2 D. (2x - 5)(4x2 + 10x + 25)
Use the graph to answer the question.
Use a signed number to represent the change in sales for the first 6 months from 2000 to 2001?
A. $18,000 B. $12,000 C. $76,000 D. $652,000
Find the cardinal number of the set.Given:n(U)= 213n(A)= 72n(B)= 92n(A ? B)= 31n(A ? C)= 34n(A ? B ? C)= 16n(A' ? B ? C')= 45n(A' ? B' ? C')= 54Find n(C).
A. 44 B. 42 C. 26 D. 76
Evaluate the integral  figures 4.png)
f(x, y, z)dV where f(x, y, z)= xy + yz and B = { x, y, z) | 0 ? x ? 2, -1 ? y ? 1, 0 ? z ? 3} with respect to x, y, and z, in that order.
Select the correct answer. a. 4 b. 28 c. 36 d. 24