Find the exact value of the expression.
A. - 
B. -2
C. - 
D. -
Answer: D
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New telephone lines must be installed to connect 9 cities (A, B, C, D, E, F, G, H and J). Due to government regulations, the only possible connections that are allowed are shown by the edges on the network below. The numbers on the edges indicate the cost (in millions of dollars) of each possible connection. The telephone company wishes to connect the cities in the cheapest possible way.
The total cost of the optimal solution to this problem is
A. 21 million. B. 19 million. C. 20 million. D. 18 million. E. none of these
Solve the compound inequality. Other than ?, graph the solution set on a number line.5x - 9 ? -19 and 5x - 4 ? 11
A. [-2, 3]
B. [3, ?)
C. [-2, ?)
D. (-?, -2] ? [3, ?)
Solve the problem.Barnes and Able sell life, health, and auto insurance. Sales for May and June are given in the matrices. Life Health AutoM = 
J = 
Find the matrix that would give total sales.
A. 
B. 
C. 
D. 
Find the sum.-10 + (-2)
A. -8 B. 8 C. -12 D. 12