Respuesta :
so to do this i would make the equation:
3*3.95+x=20
11.85+x=20
x=8.15
First, you would do 3 * 3.95 to find the price of the books.
3.95(3) = 11.85
Now, we subtract it from the $20. This will give you the change.
20 - 11.85 = 8.15
Your change is $8.15