Answer: 15 yards
Step-by-step explanation:
From the question, we are given the information that Lucia has 18 pieces of ribbon that she uses to decorate presents and that the length of one ribbon is 5/6 of a yard. 
Therefore, the number of yards of ribbon that Lucia has will be gotten by multiplying 5/6 by the total pieces of ribbon. This will be:
= 5/6 × 18
= 15 yards
 
        
             
        
        
        
The cost per shirt is $9.66 because you divide 38.64 by 4.
        
                    
             
        
        
        
C. is most likely the correct answer
        
             
        
        
        

that's the equation for a circle
plug in the given h,k and r values then