Answer:
The equation has no solution
Step-by-step explanation:
Since the left side is always > 0, the equation has no solution.
<span>In the question "Which equation results from taking the square root of both sides of (x – 9)2 = 81?" The correct answer is x - 9 = +/- 9.
Taking the square root of both sides of the equation (x - 9)^2 = 81 will give:
sqrt(x - 9)^2 = sqrt(81)
x - 9 = +/- 9
Solving the equation results in two equation:
x - 9 = 9 and x - 9 = -9
x = 9 + 9 and x = -9 + 9
x = 18 and x = 0</span>
Answer:
60
Step-by-step explanation:

Answer:
The maximum revenue is 16000 dollars (at p = 40)
Step-by-step explanation:
One way to find the maximum value is derivatives. The first derivative is used to find where the slope of function will be zero.
Given function is:

Taking derivative wrt p

Now putting R'(p) = 0

As p is is positive and the second derivative is -20, the function will have maximum value at p = 40
Putting p=40 in function

The maximum revenue is 16000 dollars (at p = 40)