A----------D----------C
AD = 2x + 6
DC = 4x - 7
the midpoint D splits AC into 2 equal parts....therefore, AD = DC
2x + 6 = 4x - 7
2x - 4x = -7 - 6
-2x = - 13
x = -13/-2
x = 6.5 
DC = 4x - 7......4(6.5) - 7 = 19 <===
AD = 2x + 6.....2(6.5) + 6 = 19
        
             
        
        
        
The function f(x) is increasing on the interval (-4, 0) ∪ (4, ∞).
 
        
        
        
Answer & Step-by-step explanation:
I can't draw the image, but I can explain it to you.
Since 1 unit was 3 units and now it's 9, you would have to divide each side by 3. So, the width would be 1 unit and the length would be 2 units.
I hope this helped!!!
 
        
             
        
        
        
Answer:
18.85 feet
Step-by-step explanation:
Determine the arc length of SR 
Arc length = θ/360 × 2πr
r = 9 feet
θ =120°
Arc length = 120/360 × 2 × π × 9
= 18.849555922 feet
Approximately = 18.85 feet
Therefore, the arc length of SR = 18.85 feet