ok i dont actually know how to find the range and domain of a function so could anyone please show me how, and also this is my question that needs answering please.

f:x = 2x + ln2

g:x = e^(2x)

gf:x = 4e^(4x), (x E R)

the question asks to find the range of gf.

Part (c) is write down the range and domain of: ln(4-2x)