In this question, we have to write the set of points from -6 to 3 but excluding -2 and 3 as a union of intervals .
For union, we use U.
For the points that we have to exclude , we put parenthesis on there side  that is  ().
Therefore the required interval form is

As we see that () are used with -2 and 3 . And that's the required interval form .
 
        
             
        
        
        
Jackie wants to justify that f(x) = 2x - 6 is a linear function.
Lets assume some values for x  and find out f(x)
We make a table with x values 1, 2, 3, 4 and find f(x)
To find f(x) we plug in x  value in the given equation 
x        f(x)
1          2(1)-6 = -4
2         2(2)-6 = -2
3          2(3)-6 = 0
14         2(4)-6 =2
for f(x) we got -4, -2, 0 , 2
The value of f(x) is increasing by 2. There is a constant increase in f(x)
When there is a constant rate of increase then it is a linear function
constant rate of increase that is slope = 2. Hence f(x) = 2x -6 is a linear function. 
 
        
             
        
        
        
Answer:
32
Step-by-step explanation:

 
        
                    
             
        
        
        
36-9
-9+36
1 (36-9)
36-(3×3)
        
                    
             
        
        
        
Answer:
i think it is b
Step-by-step explanation: