A. X = 2 
what you do is divide each side by the coefficient of x (3.2) to get rid of it on the left, and simplify the right: 2.
        
             
        
        
        
Answer:
π(8)²=64π
Step-by-step explanation:
Area = Pi times radius squared 
We know the Diameter is 16 so the radius must be 8.
8 squared = 64, then we multiply pi when you get your answer.
 
        
             
        
        
        
T
adds 6
t-6
divides by 6
(t-6)/6
shawn
7+t
divide by 7
(7+t)/7
theyare equal
(t-6)/6=(7+t)/7
times 42 both sides
7(t-6)=6(t+7)
distribute
7t-42=6t+42
minus 6t both sides
t-42=42
add 42 both sides
t=84
        
                    
             
        
        
        
Answer:
7
Step-by-step explanation:
So basically first distribute the -5 to the stuff in the parenthesis and then solve. 
Hope I helped!! :)