Answer:
y = 6
Step-by-step explanation:
You subtract 32 from both sides and divide by -4.
 
        
                    
             
        
        
        
Answer:
A is reflected over the y axis and translated 2 units up and 2 units to the right. 
Translate is the math word for slide
 
        
                    
             
        
        
        
The best way to multiply complicated problems mentally* is to break them into chunks.
Start with 20 times 8 to get 160, and then 8 times 5 to get 40. Add these together to get 200. 200 times 3 is 600, and 20 times 200 is 4000. Add these together to get your final answer, 4600. 
In other words 8 x 20 + 8 x 5 = 200  200 x 3 + 200 x 20 = 4600
*I assumed you meant mentally, because otherwise you'd just multiply longhand, multiplying two of the three numbers and then multiplying their product with the third. 
        
             
        
        
        
Subtract 5x to both sides
        
                    
             
        
        
        
4(3+14c−12d)
=(4)(3+14c+−12d)
=(4)(3)+(4)(14c)+(4)(−12d)
=12+c−2d
=c−2d+12