Answer:
around 13,000
Step-by-step explanation:
it goes up 1,000 a year normally so the estimated amount for next year is 13,000
hope this helps:) sorry if I'm wrong
Answer:
hola que nesecitas yo no se ese deber
Answer:

Step-by-step explanation:
Rewrite the system of equations as:

Subtract the second equation from the first to isolate
:

Plug in
into any of the equations above and solve for
:

Verify that the solution pair
works 
Therefore, the solution to this system of equations is:

Answer:
193.5 new books 73.5 old books
Step-by-step explanation: