Question

Charlene is a writer who is going on a trip. she has brought several copies of her latest book in her suitcase. the suitcase itself weighs 5 pounds and each book weighs 3 punds. if her full suitcase can weigh no more than 50 pounds how many books can she bring

Answer 1

i think is like this: 5 + 3x  ≤ 50

                          -5+3x ≤50-5

                               3x ≤45

                          divide by 3 , x= 15