If f(x) = 2x+2 what is f(f(3))?
a. 18
b. 8
c. 64
d. 16  Options:
A) 8 B) 18 C) 64 D) 16 E) 26
f(3)=2*3+2= 
<gadget id="calculator">2*3+2</gadget>
<output>8</output>
8   now put this value again in the function   f(8)=2*8+2= 
<gadget id="calculator">2*8+2</gadget>
<output>18</output>
18   ANSWER:18
<result>B</result>
If f(x) = 2x+2 what is f(f(3))?
a. 18
b. 8
c. 64
d. 16