Answer: 36in2
Step-by-step explanation:
A= base *height 
=12*3
=36 
 
        
             
        
        
        
Each book costs $34 for this problem you need to first subtract 18 from 324 which gets you 306 then divide 306 by 9 and you get 34
        
                    
             
        
        
        
Answer:
-8/1 or -8
Step-by-step explanation:
when you subtract a negative, it means add. so first lets add the one. we get -8 1/3. then we can add the 1/3. our final answer is -8
 
        
             
        
        
        
Answer:
I had done already.thanks for huge point and heart.
 
        
             
        
        
        
1 3/6 + 4/6 = 1 7/6 = 2 1/6