Which of the following functions shown in the table below could be an exponential function?

Question

anonymous · Answer

attachment

anonymous · Answer

A.      f(x)

  B.      g(x)

   C.     h(x)

   D.     k(x)


**choose ALL that apply!! and pls explain :) thanks!

phi · Answer

Exponential means you can find a common ratio between terms

anonymous · Answer

okay so f(x) is an answer right?? cuz its always +2 ?

anonymous · Answer

and g(x) doesn't have a common ratio...

anonymous · Answer

and neither does h(x) or k(x) right?? so is my only answer here A. f(x) ??? @phi :)

phi · Answer

a ratio is the n+1 term divided by the nth term

a common difference  like +2 means a linear function:  it goes up by 2 at each term

anonymous · Answer

ohh okay then idk... :( can u pls show me?

anonymous · Answer

and we are looking for exponential function so f(x) is NOT an answer here then?

phi · Answer

g looks like a common ratio of 0.7
0.7^x

h(x) looks like 1.6^(x+3)
k(x) looks like a parabola  (it goes down, then back up)

anonymous · Answer

okay so my only answers are    C.     h(x) and  D.     k(x) ???

A and B don't work here?? C and D are my answers??

phi · Answer

I believe so

anonymous · Answer

kk thanks!! :)

phi · Answer

whoops,  g and h  not k

anonymous · Answer

ohhh okay haha so   B.      g(x) and   C.     h(x) are my answers? :)

anonymous · Answer

@phi :)

phi · Answer

yes B and C

anonymous · Answer

kk thanks !!