Lety represent the total cost of publishing a book (in dollars). Letx represent the number of copies of the book printed. Suppose thatx andy are related by the equation10x + 1250 = y

Note that a change can be an increase or a decrease.

For an increase, use a positive number. For a decrease, use a negative number.

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

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

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