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Type: Multiple-Choice
Category: Quadratic Equations and Expressions
Level: Grade 11
Standards: HSA-REI.B.4, HSA-REI.B.4b, HSF-IF.C.8, HSF-IF.C.8a
Tags: HSF-IF.C.8a
Author: jjstanley
Last Modified: 5 years ago

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Quadratic Equations and Expressions Question

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Grade 11 Quadratic Equations and Expressions CCSS: HSA-REI.B.4, HSA-REI.B.4b, HSF-IF.C.8, HSF-IF.C.8a

A belted kingfisher sits on a branch watching for fish in the water. It dives from the branch when it sights a fish. Its flight path is described as y=x2-4.25x+4.125, where y is the height and x is the time in seconds. At what times does the bird enter and exit the water?
  1. 1.5 s and 2.75 s
  2. -2.5 s and 1.75 s
  3. -1.5 s and -2.75 s
  4. 0 s and 4.125 s