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

C=297.20/20

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

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 Each book costs 14.86 dollars