1003024905

SubArea: 
Exponential functions
Level: 
B
Project ID: 
1003024905
Accepted: 
1
Clonable: 
0
Easy: 
1
Which of the following functions is bounded above?
\( f(x) = -3^{-x} \)
\( f(x) = \left(\frac13\right)^{-x} \)
\( f(x) = 3^x \)
\( f(x) = \left(\frac13\right)^x \)