The graph of a function increases twice as much over each subsequent equally sized interval. Which of the following could be the parent function of the graphed function?

Question

purplemexican · Answer

attachment

anonymous · Answer

i guess we can solve this but god knows it is really an ill posed question

anonymous · Answer

also like the fifth one of these i have seen

anonymous · Answer

square both sides and get 
$$4x+41=(x+5)^2$$ solve the resulting quadratic equation
you will get two solutions
one will work in the original equation, the other will not

anonymous · Answer

since this question is ridiculous, lets cheat

anonymous · Answer

http://www.wolframalpha.com/input/?i=4x%2B41%3D%28x%2B5%29^2

anonymous · Answer

the two solutions are $2$ and $-8$
in the original equation 2 works and -8 does not, so -8 is the "extraneous" solution