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OpenStudy (anonymous):
Find the vertex of the parabola formed by the following quadratic function: y = 7x^2 + 21x - 1 please help!
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OpenStudy (anonymous):
A. (-2, -15) B. (2, 69) C. (1, 27) D. (-3/2, -67/4)
OpenStudy (anonymous):
just give me a minute
OpenStudy (anonymous):
okay,thankyou :)
OpenStudy (anonymous):
1 minute
OpenStudy (anonymous):
D
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OpenStudy (anonymous):
it's the only one with the correct x value
OpenStudy (anonymous):
thanks!
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