Answer: INDEiAaaaaaaaaaaaaaaa
 
        
                    
             
        
        
        
Hey there!
We want to multiply a certain quantity by 2, so we will put the two outside of parentheses and put our variable (x) minus two inside the parentheses to represent this. This will all equal two.
2(x-6)=2
The unknown number is also 7.
I hope that this helps!
 
        
             
        
        
        
Answer:
30%
Step-by-step explanation:
Percentage discount

☆ Discount= original price -selling price
 
        
             
        
        
        
The time(h), would be the independent variable and the temperature(C) would be the dependent variable. 
        
             
        
        
        
Answer:
see below
Step-by-step explanation:
Vertical angles are formed by two lines and are opposite each other
Vertical angles are equal