Answer:
so, lauren isn't correct
Step-by-step explanation:
3x + 4 (2x + 5) = 6x + 5x + 5
3x + 8x + 20 = 11x + 5
11x + 20 ≠ 11x + 5
 
        
             
        
        
        
The answers are published data, survey, and observational study in that order on elearning for anyone still wondering.
        
                    
             
        
        
        
Solution:
As we know reference angle is smallest angle between terminal side and X axis.
As cosine 45 ° is always positive in first and fourth quadrant.
i.e CosФ, Cos (-Ф) or Cos(2π - Ф) have same value.
As, Cos 45°, Cos (-45°) or Cos ( 360° - 45°)= Cos 315°are same. 
So, Angles that share the same Cosine value as Cos 45° have same terminal sides  will be in Quadrant IV having value Either Cos (-45°) or Cos (315°).
Also, Cos 45° = Sin 45° or Sin 135° i.e terminal side in first Quadrant or second Quadrant.
 
        
                    
             
        
        
        
I did out all my work but it got deleted. Hope you don't mind just answers.
5) 10
6) 32
7) 64 pi
8) A=64 pi C=16 pi
9) A=110.25 pi C=21 pi
10) A=1024/pi C=64
11) L=4sqrt(5) or about 9 midpoint is (1,4)
12) L=sqrt(37) or about 6 midpoint is (-1,-3.5)
Sorry I couldn't show work, hope this helps :)
        
             
        
        
        
L times height equals area. So it's (8+8)×(8+2)=160 square inches