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1 vote
The function f(x) = -3/4x^2 +9/2x models, in feet, the shape of a doorway arch on a historic building. How high is the

opening of the arch?
6.75 feet
3 feet
6 feet
7.25 feet

1 Answer

2 votes
Is has to be 7.25 feet.
User Mantri
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