SOLUTION: Ray had scores of 75, 82, 94 and 77 on his first four math tests. What must he score on the next test to have an average of at least an 85? Set up and show an inequality.

Algebra ->  Inequalities -> SOLUTION: Ray had scores of 75, 82, 94 and 77 on his first four math tests. What must he score on the next test to have an average of at least an 85? Set up and show an inequality.       Log On


   

Question 936577: Ray had scores of 75, 82, 94 and 77 on his first four math tests. What must he score on the next test to have an average of at least an 85? Set up and show an inequality.
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
(75+82+94+77 + x)/5 >= 85
(75+82+94+77) + x >= 85*5
x >= 85*5 - (75+82+94+77)
x >= 97
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