For your second question: so .
I have no idea on how to solve this problem. Please show me a step by step solution! The answer is 4000.Once the initial publicity surrounding the release of a new book is over, sales of the hardcover edition tend to decrease exponentially. At the time publicity was discontinued, a certain book was experiencing sales of 25,000 copies per month. One month later, sales of the book had dropped to 10,000 copies per month. What will the sales be after 1 more month?
And also need assistance with the following question...
Find if and .
Here's what I did...
...and textbook answer is 400.
Do you understand the solution?