6 6
4
5
-8
If A =
7
-4
4
and B = 9-5
-8, find 3A + 9B
-6
9
-3
9 - 5
2
a.
C.
57 69
12
51
39
60
90 -51
12
36
-21
60
-27
66
-21
-81
96
-33
b.
d.
9
-27
84
27
63
-60
-60
33
84
102 -57 -60
-99
72
-27
63
-18
9

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