X= 0 or 2
When you simplify to x(x-2) = 0, you will easily see
        
             
        
        
        
T-shirt costs $4
Sweater costs $4(4)
Sweater costs 4 x 4
4 x 4 = 16
Sweater costs $16 
hope this helps
        
                    
             
        
        
        
Answer:
Lcm=18
Step-by-step explanation:
First do prime factorization of 6 and 9 
common factor of 6 is 3 
and remaining factor is 2×3
Now,
C.F×R.F= 3×2×3
=18 
 
        
             
        
        
        
P-paratheses (do any math that has parentheses around the numbers) y=(2x5)+25
E-exponents (do the exponents next) y=(2x5)+5^2
M-multiplying. (Basically everything is self explanatory from here to then cuz im lazy to list examples) 
Just basically if you don't use PEMDAS, you'll get the wrong answer