Question 553590
what is the vertex of this quadratic and can you show me the steps of how you got this: 
f(x)= (-3/10)x^2+(9/2)x-(7/6)
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vertex occurs at x = -b/(2a) 
= (-9/2)/(2(-3/10)) 
= (-9/2)/(-3/5)
= (-45/-6)
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= 15/2
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= 7.5
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f(7.5) = (-3/10)(7.5)^2+(9/2)(7.5)-(7/6) = 15.71
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Vertex: (7.5 , 15.71)
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Cheers,
Stan H.
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