Final answer:
Total utility refers to the total satisfaction received from consuming a certain amount of a good or service. The marginal utility for the fourth unit of x is 18 utils according to provided data, implying that consuming the fourth unit adds to the total utility already obtained from the first three units. However, without specific utility values for all units, an exact total cannot be calculated here.
Step-by-step explanation:
The question relates to the concept of total utility, which is a term used in economics to describe the total satisfaction received from consuming a certain amount of a good or service. The subject enquired about is the total utility yielded by consuming 4 units of x. Although the question does not provide detailed information on the utility values for each unit consumed, a reference to Table 6.2 and subsequent steps suggests that marginal utility and decision-making regarding the consumption of goods are involved.
For instance, the information provided indicates that the marginal utility of the fourth T-shirt is 18 utils. If this fourth T-shirt is not consumed, then there is a loss of 18 utils of satisfaction. Following through with the details provided, if the individual in the scenario gains more utility (31 utils) from opting for an alternative choice (like buying two movies), the net gain would be 13 utils, suggesting a higher total utility by making this switch.
In general, to answer the question in the context provided, one would need to understand the cumulative satisfaction from consuming the first three units and the 18 utils from the fourth unit. If the total utility after consuming three units of x was 76 utils, adding the 18 utils from the fourth unit would yield a total utility of 94 utils for consuming 4 units of x