1. Explain how a change in price affects total expenditure by filling in each cell with the resulting change in total expenditure.
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Demand is ...
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Increase in Price
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Decrease in Price
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Elastic
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Unit-elastic
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Inelastic
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2. You buy only apples and bananas. Your budget is such that you can purchase 3 apples and 4 bananas or 9 apples and 2 bananas. Write down the equation for the budget line with bananas on the y-axis. Is that equation unique?