First Chart: Perimeter 
Square Portion: 
Original Side Lengths: P = 4  (1 + 1 + 1 + 1 ) =4 
Double Side Lengths: P = 8 (2 x 4 = 8) 
Triple Side Lengths: P = 12  (4 x 3 = 12) 
Quadruple Side Lengths: P = 16 (4 x 4 = 16) 
Rectangle Portion: 
Original Side Lengths: P = 6 (1 x 2 + 2 x 2 = 6)
Double Side Lengths: P = 12 (2 x 2 + 4 x 2 = 12)
Triple Side Lengths: P = 24  (4 x 2 + 8 x 2 = 24) 
Quadruple Side Lengths: P = 48 (8 x 2 + 16 x 2 = 48) 
Second Chart: Area
Square Portion: 
Original Side Lengths: A = 1 (1 x 1 = 1) 
Double Side Lengths: A = 4 (2 x 2 = 4)
Triple Side Lengths: A = 9 (3 x 3 = 9 
Quadruple Side Lengths: A = 16 ( 4 x 4 = 16) 
Rectangle Portion: 
Original Side Lengths: A = 2 ( 1 x 2 = 2 ) 
Double Side Lengths: A = 8 ( 2 x 4 = 8) 
Triple Side Lengths: A = 18 ( 3 x 6 = 18) 
Quadruple Side Lengths: A = 32 (4 x 8 = 32) 
 
        
             
        
        
        
Answer:
25.9
Step-by-step explanation:
25.9
pi-pi+pi/pi is 0+(1*25.9) which is 25.9
Hope this helps :D
 
        
                    
             
        
        
        
16 rounded to the nearest number is 20 im not sure if i helped you though
        
             
        
        
        
Answer:
c. 2b - 3
Step-by-step explanation:
Simplify the following:
-2 b + 4 + 4 b - 7
Grouping like terms, -2 b + 4 + 4 b - 7 = (4 b - 2 b) + (4 - 7):
(4 b - 2 b) + (4 - 7)
4 b - 2 b = 2 b:
2 b + (4 - 7)
4 - 7 = -3:
Answer:  2 b + -3