SOLUTION: 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 th
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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.
Answer by checkley75(3666) (Show Source): You can put this solution on YOUR website!
(75+63+68+x)/4>=70
(206+x)/4>=70
206+x>=280
x>=280-206
x>=74 needed for the 4 th test to maintain a C average.
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