A400-ft equal tangent sag vertical curve has its pvc at station 100+00 and elevation 500 ft. the initial grade is -4.0% and the final frade is +2.5%. determine the elevation of the lowest point of the curve.

step-by-step explanation:

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step-by-step explanation:

answer: a

step-by-step explanation: the answer is a due to the rule of symmetry; that a line of symmetry must divide a figure into 2 pieces that are the exact same, only reflected over a line of symmetry. b and c do not have lines of symmetry and would not divide the figure evenly, thus making the answer a.