The demand for Wanderlust Travel Services (X) is estimated to be Qx = 22,000 - 2.5Px + 4Py + 1M + 1.5Ax, where Ax represents the amount of advertising spent on X and the other variables have their usual interpretations. Suppose the price of good X is $450, good Y sells for $40, the company utilizes 3,000 units of advertising, and consumer income is $20,000.

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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The demand for Wanderlust Travel Services (X) is estimated to be Qx = 22,000 - 2.5Px + 4Py + 1M + 1.5Ax, where Ax represents the amount of advertising spent on X and the other variables have their usual interpretations. Suppose the price of good X is $450, good Y sells for $40, the company utilizes 3,000 units of advertising, and consumer income is $20,000.

a. Is good X a normal good or inferior good? Why/Why not?

b. Are goods X and Y substitutes? Why/Why not?

c. Assuming the prices of good X & Y and consumer incomes remain unchanged, if the advertising spent A is increasing, how will the price elasticity of demand for good X change? Why?

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