Answer:
i).272 
ii. (2x-1) (3y+2) 
b). 14,400 seconds 
Step-by-step explanation:
in pic 
(Hope this helps can I pls have brainlist (crown)☺️)
 
        
             
        
        
        
Answer:
The answer is multiplying by -2
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The child needs a score of 37.2 to move up to the next level of the competition.
Step-by-step explanation:
The mean is the sum of all scores divided by the number of competions. So

In which S is the sum of all her scores and T is the number of competitions.
The child has five competions:
Which means that 
She has to get a mean of at least 36.5, so 
Her scores are: 35.5, 36.3. 36.6, and 36.9. Her last score, i am going to call x. So

The child needs a score of _____ to move up to the next level of the competition.
This score is x. So




 
        
             
        
        
        
To write in slope intercept form solve the equation for y:
4x + 3y =15
Subtract 4x from both sides:
3y = -4x +15
Now get Y by itself by divide all terms by 3:
y = -4/3x + 5