# SOLUTION: Rachel hands in her 4th exam. the scores on her first three examns were 75,95,97.what foes she need to earn on the 4th exam to average at least a 90 on the four exams. contruct an

Algebra ->  Algebra  -> Expressions-with-variables -> SOLUTION: Rachel hands in her 4th exam. the scores on her first three examns were 75,95,97.what foes she need to earn on the 4th exam to average at least a 90 on the four exams. contruct an      Log On

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 Question 202514: Rachel hands in her 4th exam. the scores on her first three examns were 75,95,97.what foes she need to earn on the 4th exam to average at least a 90 on the four exams. contruct an inequality with the variable x representing the 4th score, the salvge the inquality for x.Found 2 solutions by rfer, MathTherapy:Answer by rfer(12660)   (Show Source): You can put this solution on YOUR website!75+95+97+x=267 267x/4=67 Answer by MathTherapy(1424)   (Show Source): You can put this solution on YOUR website!Since Rachel needs to get AT LEAST a 90-average on the four exams, using the average formula, which states: , we then get the following inequality: Multiplying each expression by the LCD, 4, we get: , or Therefore, in order for Rachel to average at least a 90 on all four exams, she has to score a 93, or more on her 4th and final exam. Check