SOLUTION: Jeo has scores of 65,94 and 88 on his biology tests, and now is getting ready for the final exam. The final exam counts as two tests, and he wants to get a B in the class. For that

Question 709123: Jeo has scores of 65,94 and 88 on his biology tests, and now is getting ready for the final exam. The final exam counts as two tests, and he wants to get a B in the class. For that his course average must be at least 80. Write an equality to find the scores he can make on his final exam to receive a B.
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
(65+94+88+X+X)/5>=80
(2X+247)/5>=80
2X+247>=5*80
2X+247>=400
2X>=400-247
2X>=153
X=153/2
X=76.5 AVE. FOR THE FINAL TEST.
PROOF:
(65+94+88+76.5+76.5)/5>=80
400/5=80
80=80

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