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Unformatted text preview: 0, and 1200 have a college degree and make at least $40,000, then 4800 – 1200 = 3600 have college degrees but earn less than $40,000.
S
C 1200
4200
3600 5400 – 1200 = 4200 earn at least $40,000 and do not
have a college degree. Set Union Consider the following sets: C = {x  x is a college graduate} S = {x  x earns at least $40,000} Suppose we want to mail a questionnaire to all individuals in a certain city who are college graduates or who earn at least $40,000, or both. Then the individuals to receive the questionnaire include those who are members of set C or set S. C = {x  x is a college graduate} S = {x  x earns at least $40,000} The union of sets C and S is the shaded region. C
S The union of two sets A and B, written is the set of all elements in A or in B. The key word is “or” which implies one or the other or both. Example 2 Find A B. a. b...
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This document was uploaded on 03/09/2014 for the course MATH 122 at Western Nevada College.
 Spring '11
 J.Downs
 Sets

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