(20 points) A person has utility function U = X0.270.8 for goods X and Z at prices Px = $20 and Pz = $4 and income Y = $2000. The marginal utilities of the X and Z are: MUX = 0.2X-0.870.8 and MUZ = 0.8X0.27-0.2 a. Draw the budget constraint (place X on the horizontal axis, Z on vertical axis.) Document the intercepts and slope of the constraint. b. Calculate the utility maximizing consumptions of X and Y given these prices and income. Explain and show on your graph. c. Px decreases to $8. Show graphically and find the new utility-maximizing amount of X. d. Sketch out a person's demand curve for X. e. Suppose income increases. How does this impact the demand curve you plotted?

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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(20 points) A person has utility function U = X0.270.8 for goods X and Z at prices Px = $20 and Pz = $4 and income Y = $2000.
The marginal utilities of the X and Z are:
MUX = 0.2X-0.870.8 and MUZ = 0.8X0.27-0.2
a. Draw the budget constraint (place X on the horizontal axis, Z on vertical axis.) Document the intercepts and slope of the
constraint.
b. Calculate the utility maximizing consumptions of X and Y given these prices and income. Explain and show on your graph.
c. Px decreases to $8. Show graphically and find the new utility-maximizing amount of X.
d. Sketch out a person's demand curve for X.
e. Suppose income increases. How does this impact the demand curve you plotted?
Transcribed Image Text:(20 points) A person has utility function U = X0.270.8 for goods X and Z at prices Px = $20 and Pz = $4 and income Y = $2000. The marginal utilities of the X and Z are: MUX = 0.2X-0.870.8 and MUZ = 0.8X0.27-0.2 a. Draw the budget constraint (place X on the horizontal axis, Z on vertical axis.) Document the intercepts and slope of the constraint. b. Calculate the utility maximizing consumptions of X and Y given these prices and income. Explain and show on your graph. c. Px decreases to $8. Show graphically and find the new utility-maximizing amount of X. d. Sketch out a person's demand curve for X. e. Suppose income increases. How does this impact the demand curve you plotted?
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