Solve the problem.Susan has been working on a job that will require 56 hours to complete. If she has completed 
of the job, how many hours has she worked?
A. 6
hours
B. 24 hours
C. 8 hours
D. 48 hours
Answer: D
Mathematics
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Find the potential function f for the field F.F = 
A. f(x, y, z) = 
B. f(x, y, z) = x24y9z15
C. f(x, y, z) = x8y3z5
D. f(x, y, z) = x8y3z5 + 3x8y2z5 + 5x8y3z4
Mathematics
The matrix associated with the solution to a system of linear equations in x, y, and z is given. Write the solution to the system, if it exists.
A. x = -2, y =4, z = -1 B. x = 4, y = -2, z = -1 C. x = -2, y = -1, z = 4 D. x = 4, y = -1, z = -2
Mathematics
Find the domain of the function.f(x) = 
A. {x|x ? 0} B. {x|x ? 5, -6} C. {x|x ? -5, -6} D. {x|x ? 8, -8}
Mathematics
Subtract. Simplify the result whenever possible.
- 
A. 1
B. 
C. 18
D. 
Mathematics