Step-by-step explanation:
8 battery =12
20 battery =?(x)
8x=240
x=240÷8
x=30
for 20 battery..it would cost 30
 
        
             
        
        
        
start by plugging in the value you already have, in this case, 5 for y. 
-4x-3(5)=17
-4x-15=17
-4x=32
x=-8
however, since a is a+1, a would be 7 (making x 8) 
also plz tell me if i read this wrong and it’s actually 1,5 rather than a+1 and 5 cause if i did i’m so sorry lol. 
 
        
             
        
        
        
Step-by-step explanation:
This rule states that the same value can be added to both sides of an equation without interfering with the solving process of the equation 
 
        
             
        
        
        
Answer:
y = 2/5
Step-by-step explanation: