Solve the inequality. Express your answer using interval notation. Graph the solution set.x(9x - 6) ? (3x + 7)2
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the potential function f for the field F.F = 
i + 
j - 
k
A. f(x, y, z) = 
+ C
B. f(x, y, z) = 
+ C
C. f(x, y, z) = 
+ C
D. f(x, y, z) = 
+ ln z + C
Mathematics
Solve the system by the substitution method. Be sure to check all proposed solutions.x + y = 6y = 2x
A. {(-2, 8)} B. {(2, 4)} C. {(3, 3)} D. {(1, 5)}
Mathematics
Solve the problem.If f(x) is a differentiable function and f ' (c) = 0 at an interior point c of f's domain, and if 
for all x in the domain, must f have a local minimum at x = c? Explain.
What will be an ideal response?
Mathematics
Evaluate.26 + 27 ? 19
A. 72 B. 539 C. 721 D. 1007
Mathematics