Answer:
$0.37  per oz 
Step-by-step explanation:
Unit rate 
<u>9 oz costs $3.39 and 1 oz of chips cost: </u>
- $3.39/9 = $0.37  per oz of chips
 
        
                    
             
        
        
        
Here is a method that makes it seem easier. 
<span>Write down any number between 51 and 59. </span>
<span>For example you might choose 57 = 3*19 </span>
<span>Divide both numbers by 10 and write the answer as </span>
<span>0.3 * 1.9 = 0.57</span>
        
             
        
        
        
Answer:
1st one, x=-1
2nd on, y=2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
4.0506100 x 10^-1
Step-by-step explanation:
Because all you need to do is move the decimal point to the right once, you write 10^-1 to show that to get back to the original number, you just multiply 4.0506100 by -0.1