Solve the problem.Suppose that the labor cost for a building is approximated by 
where x is the number of days of skilled labor and y is the number of days of semiskilled labor required. Find the minimum labor cost.
A. $28,260
B. $26,900
C. $20,420
D. $19,740
Answer: C
Mathematics
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Factor the sum or difference of two cubes completely.576x3 + 243
A. 9(4x + 3)(16x2 - 12x + 9) B. 9(64x3 + 27) C. 9(4x + 3)(16x2 + 9) D. 9(4x - 3)(16x2 + 12x + 9)
Mathematics
Write the augmented matrix for the system. 5x + 6y + 8z = 92 4x + 4y + 6z = 66 6x - 2y + 9z = 35
A. 
B. 
C. 
D. 
Mathematics
Solve the absolute value inequality. Write your answer in interval notation.|6k - 5| - 1 < 5
A. 
B. 
C. 
D. 
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Mathematics
Referring to triangle ABC, find the area of the triangle.
?
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Round to three significant digits.
?
A. 12.9 ft2 B. 13.1 ft2 C. 12.5 ft2 D. 12.3 ft2 E. 11.9 ft2
Mathematics