Answer: The answer is                                       because                                                 , hope this helps :)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
0.67 cm/s
Step-by-step explanation:
The area of a square is given by :
 ....(1)
Where
x is the side of a square

Differentiating equation (1) wrt t.

When A = 81cm², the side of the square, x = 9 cm
Put all the values,

So, the length of the side of a square is changing at the rate of 0.67 cm/s.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
1 - a
2 - c
3 - b 
 
        
             
        
        
        
The answer is 9. if you wanna do it the long way buit a calculator is easier
        
                    
             
        
        
        
No, since the slopes are different
for 1 line 
y = 4x - 4
slope = 4
for 2 line 
4y = 24x - 96
slope = 24/4 = 6