Question

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 y are related by the equation y = 1100 + 15x.Answer the questions below.What is the change in the total cost for each book printed?What is the cost to get started (before any books are printed)?

Answer 1

y = 1100 + 15x.

Rewriting

y = 15x+1100

This is in slope intercept form

15 is the slope. It is the change for each x

It is the change for each book

The change in total cost for each book is 15 dollars

The y intercept is 1100. It is the cost when x =0. It is the cost when there are no books printed.

It is the cost to get started

The start up cost is 1100 dollars.