The answers for 13 and 14 are attached in the file.
Answer:

Step-by-step explanation:
We want to simplify:

Let us rewrite as positive index to get:

We now find LCM to get:

Therefore the simplified form of the given expresion is:

But from the provide option, they only want us to rewrite as positive index without simplifying further
Answer:
These are the steps u need to do
3 x -2a
3x 4
Then just put 3a next to it
And add all up the variables or the ones that has an a
Step-by-step explanation:
Answer:
40
Step-by-step explanation:
6 of 30 is the ratio 6 to 30 or 6/30.
6/30 reduces to 1/5
The survey shows that 1/5 of the students attend summer camp.
1/5 of 200 = 1/5 * 200 = 40