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If f(x) = 2x+2 what is f(f(3))?
a. 18
b. 8
c. 64
d. 16
Read Solution (Total 19)
-
- f(x) = 2x+2
f(3) = 2*3+2=8
f(f(3))= 2*f(3)+2 = 2*8+2 = 18 - 10 years agoHelpfull: Yes(39) No(1)
- f(3)=2*3+2=8
now put this value again in the function
f(8)=2*8+2=18 - 10 years agoHelpfull: Yes(4) No(0)
- f(x)=2x+2
f(f(x))=2(2x+2)+2
now put x=3
f(f(3))=2(2*3+2)+2)=18
ans c - 10 years agoHelpfull: Yes(2) No(2)
- 18
because f(3) is 8 and f(8) is 18. - 10 years agoHelpfull: Yes(0) No(0)
- f(x)=2X+2;
f(f(3))=?;
f(3)=2(3)+2=8;
f(8)=2(8)+2=18;
ans:18 - 10 years agoHelpfull: Yes(0) No(0)
- 18
f((3)=8
f(f(3)=f(8)=18 - 10 years agoHelpfull: Yes(0) No(0)
- 18 is the answer
- 10 years agoHelpfull: Yes(0) No(0)
- 18
f(3)=2*3+2=8
f(8)=2*8+2=18 - 10 years agoHelpfull: Yes(0) No(0)
- f(f(x))=2(2x+2)+2
so,f(f(3))=2(6+2)+2
=18 - 10 years agoHelpfull: Yes(0) No(0)
- f(x) = 2x+2
f(3) = 2*3+2=8
f(f(3))= 2*f(3)+2 = 2*8+2 = 18 - 10 years agoHelpfull: Yes(0) No(0)
- f(3)=2*3+2=8
f(f(3))=f(8)=2*8+2=18
so............. ANS:18 - 10 years agoHelpfull: Yes(0) No(0)
- f(x)=2x+3
f(f(3))=2(2*3+2)+3
=18 - 9 years agoHelpfull: Yes(0) No(0)
- f(3)= 2*3+2= 8 and correspondingly f(8)= 2*8+2=18
- 9 years agoHelpfull: Yes(0) No(0)
- option is a 18
- 8 years agoHelpfull: Yes(0) No(0)
- a.18
first solve f(3)=8 and sustitue value ox x on eqn =18 - 8 years agoHelpfull: Yes(0) No(0)
- 18
f(f(3)=f(2(3)+2);
f(8)=2*8+2;
18; - 8 years agoHelpfull: Yes(0) No(0)
- 18 because f(3)is 6 and f(f(3)is 18 we substitute in x
- 8 years agoHelpfull: Yes(0) No(0)
- 18.
f(3)=6+2=8
now put it into f(x)
so...f(8)=16+2=18 - 8 years agoHelpfull: Yes(0) No(0)
- Here, given f(x)=2X+2 and now
f(3)= 2(3)+2=8
therefore, f(3)=8
now f(8)=2(8)+2=18 - 6 years agoHelpfull: Yes(0) No(0)
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