Answer:
8b + 7
Step-by-step explanation:
Add like terms.
7b + b (same as 1b) = 8b
4 + 3 = 7
Answer:

Step-by-step explanation:
Assuming, right and up are positive directions.
The given parent function, 
Let
be the function when the parent function is stretched by a scale factor of 2.
So, 

Let
be the function when
is translated
units right.
So, 

Again, let
be the function when
is translated 4 units up.
So, 

So, the resulting function,
.
Hence, option (1) is correct.
I believe idk could be wrong if my math is correct I got B.... hope I helped