document.write( "Question 1170680: The results of a poll claiming a 4% margin of error indicated that a candidate was favored by 48% of the voters. Write an absolute value inequality representing the percent of voters favoring the candidate. Then solve the inequality to state the range of the candidate's support. \n" ); document.write( "
Algebra.Com's Answer #851118 by CPhill(1959)![]() ![]() You can put this solution on YOUR website! Let's break down this problem step by step.\r \n" ); document.write( "\n" ); document.write( "**1. Define the Variable**\r \n" ); document.write( "\n" ); document.write( "Let 'x' represent the actual percentage of voters favoring the candidate.\r \n" ); document.write( "\n" ); document.write( "**2. Write the Absolute Value Inequality**\r \n" ); document.write( "\n" ); document.write( "The margin of error (4%) means the actual percentage could be 4% higher or 4% lower than the poll result (48%). This can be represented as:\r \n" ); document.write( "\n" ); document.write( "|x - 48| ≤ 4\r \n" ); document.write( "\n" ); document.write( "**3. Solve the Absolute Value Inequality**\r \n" ); document.write( "\n" ); document.write( "To solve the absolute value inequality, we need to consider two cases:\r \n" ); document.write( "\n" ); document.write( "* **Case 1:** x - 48 ≤ 4 \n" ); document.write( " * Add 48 to both sides: \n" ); document.write( " * x ≤ 52\r \n" ); document.write( "\n" ); document.write( "* **Case 2:** -(x - 48) ≤ 4 \n" ); document.write( " * Multiply both sides by -1 (and reverse the inequality sign): \n" ); document.write( " * x - 48 ≥ -4 \n" ); document.write( " * Add 48 to both sides: \n" ); document.write( " * x ≥ 44\r \n" ); document.write( "\n" ); document.write( "**4. State the Range of Candidate's Support**\r \n" ); document.write( "\n" ); document.write( "Combining the two cases, we get:\r \n" ); document.write( "\n" ); document.write( "44 ≤ x ≤ 52\r \n" ); document.write( "\n" ); document.write( "**Therefore:**\r \n" ); document.write( "\n" ); document.write( "* **Absolute Value Inequality:** |x - 48| ≤ 4 \n" ); document.write( "* **Range of Candidate's Support:** The candidate is favored by between 44% and 52% of the voters. \n" ); document.write( " \n" ); document.write( " |