Solve the problem.Find the mass of the region of density 
bounded by the paraboloid 
and the xy-plane.
A. 100?
B. 10?
C. 10,000?
D. 1000?
Answer: A
Mathematics
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Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 8 B. -0.2 C. 0.1 D. 0.2
Mathematics
Solve the problem.It takes a force of 
to compress a spring from its free height of 
. to its fully compressed height of 
. How much work does it take to compress the spring the first inch?
A. 1900 in.-lb B. 3800 in.-lb C. 950 in.-lb D. 190,000 in.-lb
Mathematics
Calculate the work done by the force F along the path C.F = ti + 
j + k ; C: r(t) = e4ti + e4tj + (7t2 + t)k , -1 ? t ? 1
A. W = e4 + e-4 + 16 B. W = 2 C. W = 16 D. W = e4 + e-4 + 2
Mathematics
Round the whole number to the given place value.68,593 to the nearest ten-thousand
A. 69,000 B. 70,000 C. 68,000 D. 68,600
Mathematics