Jawabanmu

2014-02-27T14:29:16+07:00
Fog(x) = f(gx)
fog(x) = f((√x + 15))
fog(x) = 3(√x + 15) + 7

maka, 
fog(1) = 3(√1 + 15) + 7
fog(1) = 3(1+15) +7
fog(1) = 3(16) + 7
fog(1) = 48 + 7
fog(1) = 55
2014-02-27T14:37:58+07:00
F(x)=3x+7
g(x)=√x+15
(fog)(1)= f(g(1)
          =f(√1+15)
          =f(1+15)
          =f(16)
          =3.16+7
          = 55
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