Use the quadratic formula to solve the equation.x2 + 12x + 21 = 0
A. {-6 - 
, -6 + 
}
B. {-12 + 
}
C. {6 + 
}
D. {6 - 
, 6 + 
}
Answer: A
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Find the location of the indicated absolute extremum for the function.Maximum
A. x = -4
B. No maximum
C. x = 0
D. x = 
Solve the problem.On a cloudy day, Sun Woo needed to know the height of a window in a building. Sun Woo positioned a mirror on the ground between himself and the building so that when he looked in the mirror, he saw the window. If the mirror was 18.49 cm from his feet and 32.14 m from the base of the building and Sun Woo's eye was 1.79 m above the ground, how high up on the building was the window located? Round to the nearest unit.
A. 3 m B. 103 m C. 1 m D. 311 m
Evaluate the expression for the given replacement values. Write the answer in simplest form.xy for x = 
, y = 
A. 
B. 
C. 
D. 
Provide an appropriate response.Use the simplex method to minimize Z = 4x1 + x2 subject tox1 + x2 ?5x1 + 2x2 ?8x1, x2 ?0.
What will be an ideal response?