The researcher studies the relationship between advertising budget and purchases for a product from Household Inc. Variable x is the money spent on advertising, and y is the revenue (both measured in thousands of US dollars). Based on the researcher's dataset, the relationship is linear and can be approximated by the following equation: y=20x+10,000. After careful consideration, the manager decides to spend $3,000 on advertising. What revenue can she expect? Group of answer choices $7,000 $60,000 $70,000 $6,000