<?xml version="1.0" encoding="UTF-8"?>
<quiz>
 <!-- categoryid: 636 -->
 <question type="category"><category><text>Pre-Calc/Chapter 3:  Exponential and Log Functions/3.5 Equations Solving and Modeling</text></category></question>
 
 <!-- resourceid-resourcedataid: 6024-5433 -->
 <question type="multichoice">
    <name>
      <text>Find the exact solution to the equation.log4(x - 2) = - 1</text>
    </name>
    <questiontext format="html">
      <text><![CDATA[<b>Find the exact solution to the equation.<br/><br/></b>log<sub>4</sub>(x - 2) = - 1]]></text>
    </questiontext>
    <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="100" format="html">
      <text>x = 2.25</text>
      <feedback format="html">
        <text>Correct</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>x =6</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>x = -1.75</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>x = 2</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
  </question>
 
 <!-- resourceid-resourcedataid: 6025-5434 -->
 <question type="multichoice">
    <name>
      <text>Solve the problem.If an earthquake has an intensity of x, then its ...</text>
    </name>
    <questiontext format="html">
      <text><![CDATA[<b>Solve the problem.<br/><br/></b>If an earthquake has an intensity of x, then its magnitude, as computed by the Richter Scale, is given by <img align="bottom" src="@@PLUGINFILE@@/ppg__pre-calc ch. 3 moodl1227121644__f1q19g1.jpg"/> <img align="bottom" src="@@PLUGINFILE@@/ppg__pre-calc ch. 3 moodl1227121644__f1q19g2.jpg"/> is the intensity of a small, measurable earthquake. (Consider <img align="bottom" src="@@PLUGINFILE@@/ppg__pre-calc ch. 3 moodl1227121644__f1q19g3.jpg"/> for this problem.) If one earthquake has a magnitude <img align="bottom" src="@@PLUGINFILE@@/ppg__pre-calc ch. 3 moodl1227121644__f1q19g4.jpg"/> on the Richter scale and a second earthquake has a magnitude <img align="bottom" src="@@PLUGINFILE@@/ppg__pre-calc ch. 3 moodl1227121644__f1q19g5.jpg"/> on the Richter scale, how many times more intense (to the nearest whole number) is the second earthquake than the first?]]></text>
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      <text></text>
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    <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>15,848,931,925</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>21</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="100" format="html">
      <text>25</text>
      <feedback format="html">
        <text>Correct</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>6</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
  </question>
 
 <!-- resourceid-resourcedataid: 6026-5435 -->
 <question type="multichoice">
    <name>
      <text>Solve the problem.If x is the hydrogen ion concentration of a sample of ...</text>
    </name>
    <questiontext format="html">
      <text><![CDATA[<b>Solve the problem.<br/><br/></b>If x is the hydrogen ion concentration of a sample of water, then the pH of that water sample is <img align="bottom" src="@@PLUGINFILE@@/ppg__pre-calc ch. 3 moodl1227121644__f1q20g1.jpg"/> If the pH of the water from one lake is 7.1 and the pH of the water from a second lake is 8.0, how many times greater is the hydrogen ion concentration of the second lake than the hydrogen ion concentration of the first lake? Round your answer to the nearest hundredth.]]></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>13.39</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>7.94</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>7.72</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="100" format="html">
      <text>0.13</text>
      <feedback format="html">
        <text>Correct</text>
      </feedback>
    </answer>
  </question>
 
 <!-- resourceid-resourcedataid: 6027-5436 -->
 <question type="multichoice">
    <name>
      <text>Use a calculator to find an approximate solution to the equation.e-t = 0.03</text>
    </name>
    <questiontext format="html">
      <text><![CDATA[<b>Use a calculator to find an approximate solution to the equation.<br/><br/></b>e<sup>-t</sup> = 0.03]]></text>
    </questiontext>
    <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>3.6066</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>-3.5066</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>3.3066</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="100" format="html">
      <text>3.5066</text>
      <feedback format="html">
        <text>Correct</text>
      </feedback>
    </answer>
  </question>
 </quiz>
