Maximize the objective function R, subject to the given constraints.
x ? 0, y ? 0
, 
A. R = 190
B. R = 15
C. R = 25
D. R = 215
Answer: D
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Find the length and direction (when defined) of u × v.u = -6i + 5i + 3k, v = 0
A. 0; -6i + 5i + 3k
B. 0; 
(-6i + 5i + 3k)
C. 0; no direction
D. 
; 
(-6i + 5i + 3k)
Find the vertices and foci of the ellipse. Graph the ellipse.
+ 
= 1
A. Foci at (0, - 2
) and (0, 2
)
Vertices at (0, -9), (0, 9)
B. Foci at (0, -9) and (0, 9)
Vertices at (0, -81), (0, 81)
C. Foci at (-9, 0) and (9, 0)
Vertices at (-81, 0), (81, 0)
D. Foci at (- 2
, 0) and (2
, 0)
Vertices at (-9, 0), (9, 0)
Determine whether the equation has no solution, one solution, or infinitely many solutions.9(x - 1) + (-11x) = -2(x + 3) + 11
A. One solution B. No solutions C. Infinitely many solutions
Simplify. Assume that all radicands are nonnegative.
+ sin2x 
A. (sin x cos x + sin2x) 
B. (sin x cos2 x + sin x) 
C. (sin x cos x + sin2x) 
D. (sin x tan x + sin x) 