document.write( "Question 114871: Sam must have an average of 70 or more in his summer course to obtain a grade of C. Her first three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C. \n" ); document.write( "
Algebra.Com's Answer #83553 by solver91311(24713)![]() ![]() You can put this solution on YOUR website! The average for the four tests, the three for which you have scores plus the last test that hasn't been taken yet, is the sum of those four scores divided by four.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Multiply both sides by 4: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Simplify: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Super-Double-Plus-Extra-Credit: If an 80 average were needed for a B, and the maximum possible score on the final is 100, can Sam earn a B? Why or why not? \n" ); document.write( " |