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General Utility Function for Consumption and Free Time
In a model where an individual's preferences concern only two goods—free time, represented by , and consumption, represented by —their utility is described by a function. This function is expressed in the general form , which formalizes the relationship between specific amounts of free time and consumption and the resulting level of utility.
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CORE Econ
Economics
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Economy
Introduction to Microeconomics Course
The Economy 2.0 Microeconomics @ CORE Econ
Ch.3 Doing the best you can: Scarcity, wellbeing, and working hours - The Economy 2.0 Microeconomics @ CORE Econ
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General Utility Function for Consumption and Free Time
Karim's Specific Utility Function
Equation of an Indifference Curve
Using Alternative Utility Functions to Model Different Preferences
Consider two individuals, Alex and Ben, who consume two goods, apples (x) and bananas (y). Alex's preferences are represented by the utility function U_A(x, y) = x * y. Ben's preferences are represented by the utility function U_B(x, y) = 2 * (x * y) + 10. Based on these functions, which of the following statements is true?
Interpreting Utility Values
A consumer's preferences are represented by a utility function. If this function assigns a value of 80 to bundle A and a value of 40 to bundle B, it means that the consumer derives exactly twice as much satisfaction from bundle A as from bundle B.
An individual's preferences for two goods, coffee (x) and donuts (y), are represented by the utility function U(x, y) = x + 2y. Consider the following four consumption bundles:
- Bundle A: 4 coffees, 3 donuts
- Bundle B: 6 coffees, 2 donuts
- Bundle C: 2 coffees, 5 donuts
- Bundle D: 8 coffees, 1 donut
Which of the following correctly ranks these bundles from most preferred to least preferred?
The Role of a Utility Function
A consumer, Jordan, enjoys drinking coffee (C) but is completely indifferent to the number of sugar packets (S) available, as they always drink their coffee black. Jordan's satisfaction depends solely on the quantity of coffee consumed; more coffee is always preferred to less, regardless of the amount of sugar. Which of the following utility functions accurately represents Jordan's preferences?
A consumer has the following preferences over bundles of two goods, pizza (P) and soda (S):
- They prefer the bundle (4P, 2S) over the bundle (3P, 3S).
- They are indifferent between the bundle (3P, 3S) and the bundle (2P, 5S).
Which of the following utility functions is inconsistent with this consumer's stated preferences?
A consumer's preferences for two goods, books (B) and movies (M), are represented by the utility function U(B, M) = B + 3M. Analyze this function. Which of the following statements accurately describes the consumer's preferences?
Evaluating the Validity of Utility Functions
A utility function mathematically represents a consumer's preferences for different bundles of goods. Analyze each of the following utility functions, where 'x' and 'y' represent the quantities of two different goods. Match each function to the description of preferences it best represents.
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Property of Utility Functions: More is Better
Utility Function as a 3D Surface
Calculating Marginal Utilities Using Partial Differentiation
An individual's preferences for consumption (represented by
c) and free time (represented byt) are captured by the utility functionU(t, c) = t * c. Which of the following combinations of free time and consumption provides the individual with the highest level of utility?Interpreting a Utility Function
An individual's preferences are modeled using the general utility function
U(t, c), where preferences depend on free time (t) and consumption (c). Match each component of this model to its correct description.In a model where an individual's preferences are described by the function U(t, c), where 't' is free time and 'c' is consumption, the value of U represents the combined monetary cost of the consumption and the free time.
Modeling Preferences with Utility Functions
In a model of preferences for consumption (
c) and free time (t), the functionU(t, c)assigns a numerical value to each combination of these two goods. This numerical value represents the individual's level of __________.The Role of the Utility Function in Economic Modeling
An individual uses a utility function,
U(t, c), to model their preferences between different combinations of free time (t) and consumption (c). Arrange the following steps in the logical order required to use this function to compare two different combinations.An economist is modeling the preferences of two individuals for consumption (
c) and free time (t). Individual A's preferences are represented by the functionU_A(t, c) = t + c, while Individual B's preferences are represented byU_B(t, c) = t * c. What key difference in their underlying preferences do these two functional forms reveal?An individual describes their preferences for free time (
t, measured in hours) and consumption (c, measured in dollars) as follows: 'I only derive satisfaction when I have them in a specific combination. For every 1 hour of free time I enjoy, I must have $20 worth of consumption. Having more of one without a proportional amount of the other adds no extra utility to me.' Which of the following utility functions,U(t, c), best captures this individual's preferences?An individual's preferences for consumption (represented by
c) and free time (represented byt) are captured by the utility functionU(t, c) = t * c. Which of the following combinations of free time and consumption provides the individual with the highest level of utility?Interpreting a Utility Function
In a model of individual choice, the function U(t, c) is used to calculate the exact monetary value an individual places on their combined satisfaction from free time (t) and consumption (c).
In a model of individual choice, preferences are represented by the function
U(t, c). Match each component of this model to its correct description.Analyzing the Structure of a Utility Function
In a model where an individual's preferences are described by the function U(t, c), the variables
tandcrepresent the quantities of free time and consumption, respectively. The output of this function,U, represents the individual's level of ________.Modeling Preferences with a Utility Function
A microeconomic model is built to represent an individual's preferences for two desirable items: consumption and free time. Arrange the following statements into the logical order that describes how these preferences are formally represented as a mathematical relationship.
An economist proposes the function
U(t, c) = 2t + 5cto model an individual's preferences for free time (t) and consumption (c). A critic argues this function is a poor representation of how most people value these two items. Which of the following statements best supports the critic's argument?Consider an individual whose satisfaction depends solely on their level of consumption (
c) and is completely unaffected by the amount of free time (t) they have. The functionU(t, c) = t + caccurately represents this individual's preferences.