Posted by **mike** on Sunday, February 24, 2008 at 4:45pm.

josephs final averages in science class are shown in the table below.

homework

% toward final grade-20%

average-93

quizzes

% toward final grade-20%

average-92

tests

% toward final grade-40%

average-85

final exam

% toward final grade-20%

average-?

what is the minimum score joseph can get on the final exam in order to receive at least 90 for his final grade?

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