Answer:
 8 hours
Step-by-step explanation:
11 hours = $176
⇒ 1 hour = $176 ÷ 11 = $16
To determine how many hours she would have to work to make $128, divide $128 by $16:
⇒ number of hours = $128 ÷ $16 
                                 = 8 hours
 
        
                    
             
        
        
        
Answer:
You need to add or multiply the degres. 
Step-by-step explanation:
donnne wc
 
        
                    
             
        
        
        
Answer:
35.6%
Step-by-step explanation:
31/87(100)
3100/87
35.6%
 
        
                    
             
        
        
        
Let
x------> hours worked by Sara last week
y------> hours worked by Joan last week
z------> hours worked by Erin last week
we know that
x=28 hours ------> equation 1
y=x-6-----> equation 2
substitute the value of x in equation 2
y=28-6=22 hours
z=y/2------> equation 3
substitute the value of y in the equation 3
z=22/2=11 hours
<u>the answer is</u>
Sara worked 28 hours last week
Joan worked 22 hours last week
Erin worked 11 hours last week