1) Discrete graph
2) Continuous graph
I hope this helps! I would check with someone else first though.
Answer:

Step-by-step explanation:

"To make x the subject" means to have the equation with all the terms in x on one side. As of now, y is the subject of the equation.
You start by subtracting 2 from both sides, you should get the following.

Then you multiply by 2 from both sides, you should end up with the following.

Therefore, you get the following.

Finally, you distribute and get the answer.

No, you can not separate:
ln ( 7 + x ) ≠ ln 7 + ln x
You can separate just if you have a logarithm of multiplication.
For example:
ln ( 7 · x ) = ln 7 + ln x
Hello,
P(x)=x^3-7x-6
P(4)=4^3-7*4-6=30
Remainder=30
Simplify both sides then isolate the variable and it gives you y=3.6