document.write( "Question 71433: Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His 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 grade. \n" ); document.write( "
Algebra.Com's Answer #51108 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! (75+63+68+x)/4>=70 \n" ); document.write( "(206+x)/4>=70 \n" ); document.write( "206+x>=280 \n" ); document.write( "x>=280-206 \n" ); document.write( "x>=74 needed for the 4 th test to maintain a C average. \n" ); document.write( " |