Find all complex solutions for the equation.1 - 
= 
A. 
B. 
C. {2}
D. {-2}
Answer: D
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Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.
y = xy = 2x
A. Since limx?0+ f '(x) = 2 while limx?0- f '(x) = 1, f(x) is not differentiable at x = 0. B. Since limx?0+ f '(x) = -2 while limx?0- f '(x) = -1, f(x) is not differentiable at x = 0. C. Since limx?0+ f '(x) = 1 while limx?0- f '(x) = 2, f(x) is not differentiable at x = 0. D. Since limx?0+ f '(x) = 1 while limx?0- f '(x) = 1, f(x) is differentiable at x = 0.
Model the problem with a linear equation.The average value of a certain type of automobile was $14,700 in 2008 and depreciated to $7020 in 2012. Let y be the average value of the automobile in the year x, where x = 0 represents 2008. Write a linear equation that models the value of the automobile in terms of the year x.
A. y = -1920x - 660
B. y = -1920x + 14,700
C. y = -1920x + 7020
D. y = - 
x - 7020
Find an equation for the line, in the indicated form, with the given properties. Containing the points (3, -2) and (-1, 7); general form
A. 5x - 8y = -51 B. 9x + 4y = 19 C. -9x + 4y = 19 D. -5x + 8y = -51
Graph the system of inequalities.y ? - x2 - 6x - 4y ? x2 + 6x + 4
A. 
B. 
C. 
D. 