Final answer:
The subject of this question is Mathematics and the grade level is High School. Tessa's utility function is u(x1, x2) = x1 + 2x2, and the goal is to find the point of highest utility by maximizing the function.
Step-by-step explanation:
The subject of this question is Mathematics because it involves the utility function for two types of alien foods. The grade level of the question is High School as it requires understanding of utility functions and maximizing utility.
In this case, Tessa's utility function is given by u(x1, x2) = x1 + 2x2, where x1 represents the quantity of Akrennian Beetle Sashimi and x2 represents the quantity of Kep-Mok Ticks. The function assigns weights of 1 to x1 and 2 to x2, indicating that Tessa values Kep-Mok Ticks twice as much as Akrennian Beetle Sashimi.
To find the point of highest utility for Tessa, you need to maximize the utility function. This can be done by finding the values of x1 and x2 that yield the highest possible value of x1 + 2x2, while also considering any constraints or limitations given in the problem.