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If f(x)=2x^n+a, where f(2)=26 and f(4)=1...

If `f(x)=2x^n+a`, where `f(2)=26 and f(4)=138,` then: `f(3)=`

A

56

B

82

C

64

D

122

Text Solution

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The correct Answer is:
C
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