Annual U.S. imports from China in the years 1997-1999 could be approximated by  billion dollars per year, where t represents time in years since the start of 1995. During the same period, annual U.S. exports to China could be approximated by

data-wiris-created="true" varid="variable_id_field" variablename="impvar_7c975423a05f4597b2971bcbd" /> billion dollars per year.

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Compute the area between the graphs of I and E over the interval . (Round your answer to the nearest $10 billion.)

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A. $80 billion

B. $170 billion

C. $230 billion

D. $20 billion

E. $110 billion

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Answer: E

Mathematics

Evaluate the improper integral or state that it diverges.

A. 0.3333 B. -0.2222 C. -4.667 D. diverges

Use your calculator to solve the problem.The length (in feet) an industrial spring is stretched from its natural length with work, W is given by L = , where k is a constant for the given spring. If a certain spring has a constant of 67.6 and has 287 foot-pounds of work applied, how far will it stretch?

A. 2.06 feet B. 8.49 feet C. 72.1 feet D. 2.91 feet

Solve the problem.The medians of a triangle intersect at a point. The distance from the vertex to the point is exactly two-thirds of the distance from the vertex to the midpoint of the opposite side. Find the exact distance of that point from the vertex A(3, 4) of a triangle, given that the other two vertices are at (0, 0) and (8, 0).

A.
B.
C. 2
D.

Divide and write the result in standard form.

A.  - i
B. 1 - i
C.  + i
D.  - i