Answer:
176 books
Step-by-step explanation:
Let's call the number of fiction books 'F', and the number of non-fiction books 'N'. Then, we can write the following system of equations:
eq1:

eq2:



Using the 'F' value from the first equation, we have:




The total number of books is:

Answer:
B. -12
Step-by-step explanation:
The given limit are;
and 
We want to find;

We substitute the given limits to obtain;


Answer:
x = 1
Step-by-step explanation:
2x + 5 = 10 - 3x
2x + 3x = 10 - 5
5x = 5
x = 1