# working with data

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

homework
average-93

quizzes
average-92

tests
average-85

final exam
average-?

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

• working with data -

.2*93 + .2*92 + .4*85 + .2*X >= 90. Solve for X.

• working with data -

95

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