Plot the point with the given polar coordinates.(2, 45°)
A. 
B. 
Answer: B
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Provide an appropriate response. Under which of the following conditions of k will this quadratic, x2 + 8x + k = 0, have real-number, but unequal roots?
A. k ? 16 B. k ? 16 C. k > 16 D. k < 16
Perform the requested composition or operation.Find 
(-4) when f(x) = 5x - 2 and g(x) = 3x2 + 14x + 5.
A. 0
B. 
C. 
D. - 1
Determine the eccentricity, the type of conic, and the directrix.r = 
A. Eccentricity = 2; ellipse; directrix x = - 
B. Eccentricity = 
; ellipse; directrix x = - 
C. Eccentricity = 
; hyperbola; directrix x = - 14
D. Eccentricity = 
; hyperbola; directrix y = - 
An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to determine the maximum value of the objective function and the values of x and y for which the maximum occurs.Objective Function z = 3x + 5yConstraints x ? 0 y ? 0 2x + y ? 15 x - 3y ? -3
A. maximum 75; at (0, 15) B. maximum 33; at (6, 3) C. maximum 38; at (6, 4) D. maximum 22.5; at (7.5, 0)