Answer:
A.Domain:{x\x is a real number }
Range:{y\y>5}
Asymptote :y=5
Step-by-step explanation:
We are given that a function

We have to find the domain, range and asymptote of h(x).
It is exponential function therefore, it is defined for all values of x.
Hence, domain of h(x)={x| x is a real number}
Substitute x=0 then we get

(a^0=1)
Hence, range of h(x)={y|y>5}
For exponential function,
Horizontal asymptote:
when 
Apply limit 



Hence, the horizontal asymptote y=5.
Divide both by 2:
2/2= 1
50/2= 25
1:25 would be the ratio, or "A".
I hope this helped!