Let y represent the total cost of publishing a book (in dollars). let x represent the number of copies of the book printed. suppose that x and x are related by the equation.

what is the change in the total cost for each book printed?

what is the cost to get started (before any books are printed)?

equation: y=1250+25x

Since we are already given the equation, we can already solve for the given problems above. Let us start with part 2 so we can easily answer part 1.
Part 2: the cost to get started before any books are printed. Using the equation, x = 0. So, y =1250+25(0)
                y= 1250
So the cost to get started before any books are printed is 1250.
Now, to part 1, let us say, only 1 book is printed. So x=1
y = 1250 +25(1)
y= 1250 +25
y = 1275
So, for 1 book is 1275, and no book is 1250. This gives us the answer that the change in the total cost for each book printed would be $25. Hope this is the answer that you are looking for.

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