I think its B...

The following table shows the values of f(x) and g(x) for different values of x:

x 1 2 3 4 5
f(x) 2 4 8 16 32
g(x) 2 2 2 2 2

Which of the following best describes the function f(x) + g(x)?

2^(x + 2)

2^x + 2

2^x + 2x

2(2^x)

Question

I think its B...

The following table shows the values of f(x) and g(x) for different values of x:

x	1     2     3     4     5
f(x)	2     4     8     16   32
g(x)	2     2     2     2     2

Which of the following best describes the function f(x) + g(x)?

2^(x + 2)

2^x + 2

2^x + 2x

2(2^x)

hartnn · Answer

can you find function f(x) in terms of x ?

g(x) is clearly, just 2

camerondoherty · Answer

f(x)=x times 2

hartnn · Answer

f(1) = 2 = 2^1 
f(2) = 4= 2^2 
f(3) = 8 = 2^3
f(4) =16 = 2^4
...

do you get any hint from here ?

hartnn · Answer

if it was 2x, then f(3) would be 2*3 =6 and not 8

camerondoherty · Answer

its like 2*2 then 4*2 then 8*2 etc...

hartnn · Answer

yep, but in terms on 'x', it will be 
$2^x$
and your answer B is correct :)

camerondoherty · Answer

Oh ok Thank You!

hartnn · Answer

welcome ^_^