Tony’s backpack can carry weight up to 22 but not more that that If the variable n represents the total weight carried by tony Then ; n less than or equal to (n=1+3+3b =4+3b Where b represents book 4+3b is less or equal to 22 3b is less or equal to 18 b is less or equal to 6
Therefore Tony’s backpack cannot carry more than 6 books
