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What are the marginal utilities of x1 and x2 given the following utility functions, then find...

What are the marginal utilities of x1 and x2 given the following utility functions, then find the MRS:

U(x1, x2) = 4 x1 + 8 x2

U(x1, x2) = (x1 + 2)(x2 + 1)

Example. To find the marginal utility for x1, think about how a 1 unit increase in x1, keeping all else constant, will change the amount of utility U. Once you have the marginal utilities for both, you can calculate the MRS.

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