For the given quadratic equation, determine whether the parabola opens up or down, find the vertex of the parabola, and find the axis of symmetry.y = x2 - 9x + 6
A. up; 
; x = 
B. up; 
; x = - 
C. up; 
; x = - 
D. up; 
; x = 
Answer: D
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Verify the identity.
= cos 3x
What will be an ideal response?
Solve the problem.A restaurant offers a choice of 4 salads, 9 main courses, and 3 desserts. How many possible 
meals are there?
A. 36 possible meals B. 216 possible meals C. 16 possible meals D. 108 possible meals
Solve. Remember to insert units when writing your answer.A company ships its product in boxes weighing 7 lb 3 oz. The boxes are packed in cartons of 4 boxes each. How much will 3 cartons weigh?
A. 28 lb 12 oz B. 85 lb 4 oz C. 86 lb 4 oz D. 22 lb 4 oz
Find the center and radius of the circle.x2 - 4x + y2 + 6y - 5 = 0
A. Center: (-2, 3); Radius: 3
B. Center: (2, -3); Radius: 3
C. Center: (2, -3); Radius: 18
D. Center: (-2, 3); Radius: 18