Find the equation of the axis of symmetry of the parabola.y = x2 + 9x + 4
A. x = - 
B. x = 9
C. y = 4
D. x = 
Answer: A
Mathematics
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ft (Round to the nearest tenth.)
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Simplify.(9x)(6x3)(x4)
A. 16x8 B. 54x7 C. 15x7 D. 54x8
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Replace ? with < or >.
? 855%
A. < B. >
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Factor.15z2 + 2zy - 8y2
A. (15z + y)(z - 8y) B. (3z - 2y)(5z + 4y) C. (3z + 2y)(5z - 4y) D. (15z - 2y)(z + 4y)
Mathematics