Answer:make sure the value of x is positive
-check the solution to ensure it is a rational number
Step-by-step explanation: .
22^7 - 22^4 = 2,494,123,632 .
Let
x-------> the number of fiction books
y-------> the number of nonfiction books.
we know that
-----> equation 
-----> equation 
Add equation
and equation 
<u>find the value of y</u>



therefore
<u>the answer is</u>
Part a) the number of fiction books is 
Part b) the number of nonfiction books is 
Answer:
Ac CA is your answer
Step-by-step explanation:
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Answer:
it goes up by 9 and a half