Solve the system of equations. x + y + z = -9 x - y + 4z = -9 2x + 2y + 2z = -13
A. {(-4, -3, -2)}
B. {(-2, -4, -3)}
C. {(-2, -3, -4)}
D. ?
Answer: D
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Find the average value of 
over the given region.
over the cube in the first octant bounded by the coordinate planes and the planes 
, 
, 
A. 
B. 9
C. 
D. 
Provide the requested approximation and answer with a complete sentence.In 2005, the population of a certain city was 96,882,560. Round this population to the nearest million.
A. The population of the city was approximately 96,000,000. B. The population of the city was approximately 100,000,000. C. The population of the city was approximately 96,900,000. D. The population of the city was approximately 97,000,000.
Divide by using long division.
A. 1142 B. 1152 C. 1162 R 34 D. 1157 R 26
A mail truck must deliver packages to 5 different homes (A, B, C, D, and E). The trip must start and end at A. The graph below shows the distances (in miles) between locations. We want to minimize the total distance traveled.
The cheapest-link tour starting with vertex A is given by:
A. A, B, C, D, E, A. B. A, C, D, B, E, A. C. A, E, C, D, B, A. D. A, D, B, E, C, A. E. none of these