SOLUTION: the domain and range of f(x) = 2x to the power of two plus 8x-1

Question 1024212: the domain and range of f(x) = 2x to the power of two plus 8x-1
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Convert to vertex form,

The vertex is at (,) and the coefficient of the quadratic term is positive so the parabola opens upwards and the vertex value is a minimum.
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So the domain is all real numbers and the range is [,).
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