Answer:
7c + 5
Step-by-step explanation:
(8c+8)–(c+3)
8c - c = 7c
8 - + 3 = 5
7c + 5
 
        
                    
             
        
        
        
Answer:
both are -10
Step-by-step explanation:
#1
x1	y1  x2	y2
1.5	180  6	135
 (Y2-Y1)	(135)-(180)=   -45  ΔY	-45
(X2-X1)	(6)-(1.5)=    4.5  ΔX	4.5
slope=	-10          
B=	195          
Y =-10X +195	
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~    
#2
x1	y1  x2	y2
1	175  8	105
    
 (Y2-Y1)	(105)-(175)=   -70  ΔY	-70
(X2-X1)	(8)-(1)=    7  ΔX	7
slope=	-10          
B=	185          
Y =-10X +185    
 
        
             
        
        
        
Answer:
1. 63.1. 2.22.5 3. 74.3 4. 56.1