Answer:
Domain states that the set of all possible values of the independent variable for which function is defined.
Range states that the set of all resulting values of the dependent variables, when we substituted the domain in a function.
Given: Domain (1, 2)
1. f(x) = 3x +5
for x = 1
f(1) = 3(1) +5 = 3 + 5 = 8
For x = 2
f(2) = 3(2) +5 = 6 + 5 = 11
Domain (1, 2) and Range (8, 11)
2. 
for x = 1

For x = 2

Domain (1, 2) and Range (-6, -5)
3. 
for x = 1

For x = 2

Domain (1, 2) and Range (6, 28).
4. f(x) =4 -x
for x = 1
f(1) = 4-1 = 3
For x = 2
f(2) = 4-x = 4-2 = 2
Domain (1, 2) and Range (3, 2)