Answer:
"For every 6 windows I wash, I earn $2." 
The ratio of windows washed to money earned is 3:1.
"For every 5 baseballs sold at the store, 7 footballs are sold." 
The ratio of baseballs sold to footballs sold is 5:7
 
        
             
        
        
        
hey sorry I need a free point !
        
             
        
        
        
Answer:
Therefore the mean and standard deviation of his total score if he plays a full 18 holes are 160 and  respectively.
 respectively.
Step-by-step explanation:
Given that,
For the first 9 holes X:
E(X) = 80
SD(X)=13
For the second 9 holes Y:
E(Y) = 80
SD(Y)=13
For the sum W=X+Y, the following properties holds for means , variance and standard deviation :
E(W)=E(X)+E(Y)
      and
V(W)=V(X)+V(Y)
⇒SD²(W)=SD²(X)+SD²(Y)        [ Variance = (standard deviation)²]

∴E(W)=E(X)+E(Y) = 80 +80=160
             and
∴
               
                
                
Therefore the mean and standard deviation of his total score if he plays a full 18 holes are 160 and  respectively.
 respectively.
                                                
 
        
             
        
        
        
It’s either a or b i’m not sure