Charlie's Utility Function Is U(A, B)= AB, Where a and B

question 38

Multiple Choice

Charlie's utility function is U(A, B) = AB, where A and B are the numbers of apples and bananas, respectively, that he consumes.When Charlie is consuming 15 apples and 90 bananas, if we put apples on the horizontal axis and bananas on the vertical axis, the slope of his indifference curve at his current consumption is

• A)215.
• B)-6.
• C)-12.
• D)-1/6.
• E)-1/12.

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