Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
saddle point; 
saddle point
B. 
local maximum
C. 
local minimum; 
saddle point; 
saddle point; 
local maximum
D. 
local maximum; 
local minimum
Answer: C
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Solve the equation.x(4x + 6) = 4
A. 
B. 
C. 
D. 
Compute r, the linear coefficient of correlation, for the given data.Two different tests are designed to measure employee productivity and dexterity. Several employees are randomly selected and tested with these results.
A. 0.115 B. 0.471 C. 0.986 D. -0.280
Provide an appropriate response.If an investment of $12,000 earns interest at an annual rate of 7% compounded continuously, then the value (in dollars) of the investment ten years from now is
A. 
B. 12,000(1.07)10
C. 12,000(1.07)-10
D. 12,000e0.7
E. 12,000- 0.7
Evaluate.6 ? 23
A. 14 B. 48 C. 36 D. 1728