Answer:
a) y = 5x
b) y = 60
Step-by-step explanation:
Since, y is directly proportional to x when y=30, x=6

 
        
             
        
        
        
Answer:
6x^2 -11x -1
Step-by-step explanation:
 (3x^2 + 3) - (6x + 4) + (3x^2 - 5x)
Distribute the minus sign
 (3x^2 + 3) - 6x - 4) + (3x^2 - 5x)
Combine like terms
 3x^2 + 3x^2 - 6x  - 5x -4+3
6x^2 -11x -1
 
        
             
        
        
        
A is the correct answer, NOT c.  You don't list elements of the domain each time they occur, you enter each element of the domain only once
        
                    
             
        
        
        
Answer:
-6
Step-by-step explanation:
imagine you're on a line graph you start at zero and then go backward 15 spaces and move forward 9 spaces where does that leave you