WACE Maths Applications Practice Questions - WACE ATAR Mathematics Applications (Units 3 & 4) Exam

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Using the regression line y = 3.2 + 1.5x (sales in $1000s, advertising in $1000s), the predicted sales when advertising spend is $6000 is:

$$9000 $$12 200 $$10 700 $$11 000

Correct Answer:

$$12 200

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