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

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Question 54682: 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 checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
70<=(75+63+68+X)/4
70<=(206+X)/4
280<=206+X
280-206<=X
74<=X
HIS FINAL SCORE MUST BE AT LEAST 74 TO OBTAIN AN AVERAGE OF 70.