Answer:
y = 5x – 22
3x + 2y = 34
Step-by-step explanation:
 
        
                    
             
        
        
        
Mabel spends 4 hours editing a 3 minute video. she edits at a constant rate. how long does mabel spend to edit a 9 minute video? 
she spends 4 hours on a 3 minute video 
so there are 60 minutes in an hour 
4 hours with 60 minutes- 4x60=240
so she spent 240 minutes on a 3 minute video 
3 divided by 240 
3/240= 0.0125 
so her constant rate is 0.0125 minutes an hour 
so divide 9 minutes by her constant rate 
9/0.0125 = 720 
so she spends 720 minutes on a 9 minute video. 
divide 720 by 60 since there are 60 minutes in an hour 
720/60 = 12
so she spends 12 hours on a 9minute video
        
             
        
        
        
Answer:
BIL is the answer to that one day 
 
        
             
        
        
        
Hourly rate:
39(1.3r) = 541.80
(hours times hourly rate equals profit)
then solve
1.3r = 13.89
r = 10.69
the hourly rate is $10.69
to answer the bottom question, 390 + 117 = 507, but that’s not close to 541.80 so I have no idea what they’re asking there