Which of the following is a factor of the polynomial?  figure 1.png)
(a) x - 4
(b) x +1
(c) x - 5
(e) x -12
(d) x + 2
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Solve the problem.The cost, in millions of dollars, for a company to manufacture x thousand automobiles is given by the function 
Find the number of automobiles that must be produced to minimize cost.
A. 45 thousand automobiles B. 3 thousand automobiles C. 9 thousand automobiles D. 6 thousand automobiles
Find the area of the region specified by the integral(s).
+ 
A. 4 B. 1 C. 2 D. 8
Solve the problem.The current I in a circuit with voltage E, resistance R, capacitive reactance Xc and inductive reactance XL is I = 
Find I if E = 3
(cos 45° + i sin 45°), R = 4, XL = 4, and XC = 2.Give your answer in rectangular form.
A. 
+ 
i
B. 
+ 
i
C. 
+ 
i
D. 
+ 
i
Translate the equation into a sentence by using the phrase "varies directly" or "varies inversely". x = kb2
A. x varies inversely as the square root of b. B. x varies directly as the square root of b. C. x varies directly as the square of b. D. x varies inversely as the square of b.