<?xml version="1.0" encoding="UTF-8"?>
<quiz>
 <!-- categoryid: 608 -->
 <question type="category"><category><text>Pre-Calc/Chapter 2:  Polynomial, Power, and Rational Functions/2.1 Linear//Quadratic Functions and Modeling/2.1.2 Quadratic Functions</text></category></question>
 
 <!-- resourceid-resourcedataid: 5908-5318 -->
 <question type="multichoice">
    <name>
      <text>Solve the problem.    A projectile is thrown upward so that its distance ...</text>
    </name>
    <questiontext format="html">
      <text><![CDATA[<b>Solve the problem.    <br/><br/></b>A projectile is thrown upward so that its distance above the ground after t seconds is <img align="bottom" src="@@PLUGINFILE@@/ppg__2.1.2 quadratic func0128141607__f1q13g1.jpg"/> After how many seconds does it reach its maximum height?]]></text>
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    <generalfeedback format="html">
      <text></text>
    </generalfeedback>
    <defaultgrade>1.0000000</defaultgrade>
    <penalty>0.3333333</penalty>
    <hidden>0</hidden>
    <single>true</single>
    <shuffleanswers>true</shuffleanswers>
    <answernumbering>abc</answernumbering>
    <correctfeedback format="html">
      <text></text>
    </correctfeedback>
    <partiallycorrectfeedback format="html">
      <text></text>
    </partiallycorrectfeedback>
    <incorrectfeedback format="html">
      <text></text>
    </incorrectfeedback>
    <answer fraction="0" format="html">
      <text>31.5 s</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>42 s</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>10 s</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="100" format="html">
      <text>21 s</text>
      <feedback format="html">
        <text>Correct</text>
      </feedback>
    </answer>
  </question>
 </quiz>
