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tmua.me Medium Set C Paper 2 · Q6

Paper 2Functions & graphs

The function ff is defined for all real xx by

f(x)=abx+c,f(x)=ab^x+c,

where aa and cc are real constants and b>0b>0. It is given that

f(0)=5,f(1)=7,f(3)=19.f(0)=5,\qquad f(1)=7,\qquad f(3)=19.

What is the value of f(2)f(2)?

A11
B99
C1111
D1313
E1414

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