Answer:
Answers below
Step-by-step explanation:
1)  4 (x+4)
2) 4x + 16
3) 2x+8
4) 2x+8
5) 3x+9
 
        
                    
             
        
        
        
I hope this isn't too late! You can find the answer to this by first finding the area of the circle, A=πr². So since the radius is 10, we input that into the equation to get π100. Now, there is 360° in a circle and a sector of 90° is 1/4 of it. So to answer the question all you have to do is find 1/4 of the area of the circle. 
The answer is π25.
To solve the other questions on your assignment just think about how much the sector is of the full 360° of the circle, for example 180° is 1/2 of the circle or 270° is 3/4 of the circle, and multiply the fraction by the area of the circle.
Hope this helped, good luck! :)
        
                    
             
        
        
        
Answer:
Step-by-step explanation: just search it up 
 
        
             
        
        
        
Answer:
Vertex - (2, -1) 
Axis of Symmetry - x = 2
X intercept - (3,0) (1, 0)
Y intercept (0, 3)
Domain - (negative infinity, positive infinity)
Range - [-1, infinity)
Step-by-step explanation:
I graphed with desmos and found it.