Answer:
3(12+27)
Step-by-step explanation: 3 can go into both of those numbers so u would just divide that by 3 with 36 and 81.
 
        
             
        
        
        
Find cost of shoes first (7.50)
subtract from the total value (55.20-7.50= 47.7)
then divide by 5.30 (47.7/ 5.3= 9)
        
             
        
        
        
Answer:C
Step-by-step explanation:
 
        
             
        
        
        
Y=-1/2x+8
perpendicular means slope is opposite reciprocal so it would be -1/2 
y=-1/2x+b 
Plug in points and solve for b 
B=8