Question 148209
If you graph a standard exponential function like {{{y=2^x}}}, you get


{{{ drawing(500, 500, -10, 10, -10, 10,
 graph( 500, 500, -10, 10, -10, 10,2^x   )

)}}}



From the graph, we can see that x can be any number. So the domain is b. x (-∞, ∞)