A box containing 20 books costs $297.20. Which equation can be used to find c, the cost per book?

We need to set up an equation.

297.20 is our total, so it goes after the equal sign.

c is the amount per book.

20 is the amount of books.

297.20 = 20c

Now we need to isolate the variable to solve for c.

Do the inverse operation.

20c = 297.20

20c/20 = 297.20/20

c = 297.20/20

c = 14.86

Our final answer: Each book costs 14.86 dollars

C=297.20/20

Each book costs $14.86, assuming that each book costs the same