9. The table shows the number of males and females in four clubs at a high school for two school years.
Club Membership
1961-1962
Males Females
37 23
2009-2010
Males Females
Beta
56
58
0
93
76
82
Spanish
Chess
Library
87
0
102
34
6
18
27
29
a. Write four 4 x 1 matrices, A, B, C, and D, to represent the male and female club
membership for 1961-1962 and 2009-2010
b. Write and solve a matrix equation to find matrix X, the total number of
members in each club for 1961-1962.
c. Did the total number of female club members increase or decrease between
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