The function f(x) = x + 4 is given. Solve the equation:
[3.f(x - 2)]/f(0) + 4 = f(2x + 1)  Choose the most appropriate option
A) 0.2 B) 0.3 C) 0.4 D) 0.5 E) None of these
Solution:   We calculate f(0), f(x -2), f(2x +1), namely f(0) = 0 + 4= 
<gadget id="calculator">0 + 4</gadget>
<output>4</output>
4;   f(x - 2)= x - 2 + 4 = x + 2;   f(2x + 1) = 2x + 1 + 4 = 2x + 5 The equation gets this look   [3(x + 2)]/4 + 4 = 2x + 5 &lt;=&gt;   3(x + 2) +16 = 4(2x + 5) &lt;=&gt;   3x + 6 +16 = 8x + 20 &lt;=&gt;   22 - 20 = 8x - 3x &lt;=&gt;   2 = 5x &lt;=&gt; x = 0.4   Answer 0.4
<result>C</result>
The function f(x) = x + 4 is given. Solve the equation:
[3.f(x - 2)]/f(0) + 4 = f(2x + 1)