Respostas

2013-11-08T14:48:42-02:00
A) f(-1) = 7(-1)+2 = -7+2 = -5
f(3) = 7(3)+2= 21+2 = 23

f(-1).f(3)= -5x23 = -115

b) f(2) = 7.2 + 2 = 14 + 2 = 16
f(0) = 7.0 + 2 = 2

f(2)/f(0) = 16 / 2 = 8 

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