Answer:
B is your answer to this problem
Step-by-step explanation:
Answer:
The rate of change is
ft^(2)/min
Step-by-step explanation:
The area of a circle is given by the following equation:

To solve this question, we have to realize the implicit differentiation in function of t. We have two variables, A and r. So

We have that:
.
We want to find 
So


Since the area is in square feet, the rate of change is in ft^(2)/min.
So the rate of change is
ft^(2)/min
Find how many mm are in 25m (by multiplying 25 by 1000) and convert that answer to km.
Answer:
(-38) / (-8)
equals 4.75
a negative divided by a negative is always a positive
Step-by-step explanation:
For the first one the answer is x = -3/2y - 7 and the second answer is x = 1/6y + -11/3