Solve the problem.Of all points (x, y, z) that satisfy x - y - z = 1, find the one that minimizes x2 + 2y2 + 3z2.
A. 
B. 
C. 
D. 
Answer: B
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Solve the given differential equation. (The form of yp is given.)D2y + 9y = sin x - 2 (Let yp = A + B sin x + C cos x.)
A. y = c1 sin 3x + c2 cos 3x + 
+ 
sin x
B. y = c1 sin 3x + c2 cos 3x - 
+ 
sin x
C. y = c1 sin 3x + c2 cos 3x - 
- 
sin x
D. y = c1 sin 3x + c2 cos 3x - 
+ 
sin x + 
cos x
Write and solve an equation to answer the question. Round percent to the nearest thousandth, if necessary.A discount store had monthly sales of $52,200 and spent 8% of it on health insurance. How much was spent on health insurance?
A. $4176 B. $652,500 C. $41,760 D. $65,250
Write the complex number in trigonometric form. Begin by sketching the graph to help find the argument ?.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Give the equation for a circle with the given center and radius.Center at (-9, 0), radius 
A. (x + 9)2 + y2 = 13 B. x2 + (y + 9)2 = 169 C. (x - 9)2 + y2 = 13 D. x2 + (y - 9)2 = 169