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The grades on a history midterm at Santa Rita are roughly symmetric with u = 76 and 0 = 3.0.
Ben scored 71 on the exam.
Find the z-score for Ben's exam grade. Round to two decimal places.

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Idon't see any graph, however the graph of the function : f(x) = x²-2x+3 is a parabola: 1) open upward (since a> 0)2) it intersects y-axis in 3 (y=3)3) its axis of symmetry is x = +1 ( -b/2a)4) it's minimum is y = -2, so its vertex is (1,-2)5) it doesn't intersect the x-axis since discriminant < 0