What is the relationship between marginal cost and marginal revenue when profit is at its maximum value?

Steffi is reviewing various licenses and their uses. match the licenses to their respective uses.

According to this excerpt, a key part of our national security strategy is

Define the marginal rate of substitution between two goods (x and y). if a consumer’s preferences are given by u(x,y) = x3/4y1/4, compute the consumer’s marginal rate of substitution as a function of x and y. calculate the mrs if the consumer has chosen to consumer 48 units of x and 16 units of y. show your work. (use the back of the page if necessary.