Answer:
 The choice third ; a=9 , c= 18
Step-by-step explanation:


 
        
             
        
        
        
Unit Rate: 
6 plants in 1 square yard 
Square yard for every 100 grass seeds 
8 seeds per square foot 
2 plants per square foot
Rate: 
25 trees per 25 yards 
4 acres for 800 plants
        
             
        
        
        
Answer:
times it 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
40%
Step-by-step explanation:
4 dimes = 40 cents 
1 dollar = 100 cents
40 = 40%
 = 40%