Answer:
Rate of change of the area of the square is 42 units at t = 2.
Step-by-step explanation:
We note that the area of the square is given by:  but we aim to find
 but we aim to find  . But we can use the chain rule to pull out that dA/dt. Doing so gives us:
. But we can use the chain rule to pull out that dA/dt. Doing so gives us:

Now,  (by the power rule and
 (by the power rule and 
But since we have "x" and not "t", we want to find what x is when t = 2. Substituting t = 2 gives us x(2) = 3(2) + 1 = 7.
So, finally, we see that:

 
        
             
        
        
        
Answer:
The answer is c
Step-by-step explanation:
 
        
             
        
        
        
Answer:
awwww dont cry. i know this isnt helpful but if it makes u feel better, im stuck on it too. Take a deep breath and hope someone will come and help us, <3
Step-by-step explanation: