PLEASE HELP THANK YOU Let yrepresent the total cost of publishing a book (in dollars). Let xrepresent the number of copies of the book printed. Suppose that xand yare related by the equation =y+15x1200.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.

Answer:change in the total cost for each book printed = $15cost to get started (before books are bought) = $1200Step-by-step explanation:IF the eqn is y = 15x +1200where y  represent the total cost of publishing a book (in dollars) andx  represent the number of copies of the book printed
then cost to get started (before books are bought) can be found by substitute x=0 into the eqny = 1200 + 15*0 = $1200
change in the total cost for each book printed will be the difference in total cost at x=0 and x=1when x=0, y=1200when x=1, y=1200+15*1=1215so the change in total cost=$15