Question 53947
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.  I need to write an inequality representing the score that Sam must get on the last test to get a C grade.
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Let "x" be his score on the 4th test.
INEQUALITY
The average of the 4 tests must be >= 70
(75+63+68+x)/4 >=70
(206+x)>=280
x>=74
His 4th test must be passed at a score of 74 or greater.
Cheers,
Stan H.