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Piecewise Functions
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GMAT
Q.156 Piecewise Functions
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For Z(x) = 10 - 2x if x <= -1; x + 8 if -1 < x <= 4; and 2x
2
- 20 if x > 4. What is the average of Z(-1) and Z(5)?
A
42
B
12
C
30
D
25
E
21
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