Evaluate the double integral 
for the given function f(x, y) and the region R. Enter your answer as a fraction. 
; R is the rectangle defined by 
and 
.
Definitions:
Inferior Good
A category of product that sees a decline in demand when consumer income rises.
Inversely Related
A term describing two variables that move in opposite directions; as one increases, the other decreases.
Inferior Good
A type of good for which demand decreases as the income of individuals increases, inversely related to the financial well-being of the consumer.
Tuna Fish Sandwiches
A type of sandwich made primarily from canned tuna fish and other ingredients such as mayonnaise and celery.
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