I'm not understanding how to do this problem:
Find the domain and range of the exponential function h(x) = 125x.
As x decreases, does h increase or decrease? Explain.
As x increases, does h increase or decrease? Explain.

Question

I'm not understanding how to do this problem: 
Find the domain and range of the exponential function h(x) = 125x.
As x decreases, does h increase or decrease? Explain.
As x increases, does h increase or decrease? Explain.

tkhunny · Answer

Is that $h(x) = 125^{x}\;or\;h(x) = 125x$ or something else?

tkhunny · Answer

Domain: What values can go in?  Start with All Real Numbers and see if you are forced to throw out anything.

Range: What values can you get out?  Again, start with All Real Numbers and decide if there are any that cannot be obtained?

Slope: ??  Why did I mention that?

anonymous · Answer

It is $$h(x)=125^x$$. Okay.

anonymous · Answer

Well, the output can't be less than zero.