A group of students volunteers at the animal it helping feeds the dogs. Each day small dogs eat 1/2 cup less dog food than medium sized dogs and large dogs eat 3/4 cup more dog food than the medium sized dogs. The shelter currently has 22 small dogs, 14 medium sides dogs and 8 large dogs.

Write and expression for the total amount of dog food the dogs eat each day, explaining what your variabl represents and what each term in your expression represents.

2 answers

Do your homework by yourself
Medium sized dogs eat X cups/day.
Small dogs eat x-1/2 cups/day.
Large dogs eat x+3/4 cups/day.

Total = x + (x-1/2) + (x+3/4) = 3x-1/2+3/4 = 3x-2/4+3/4 = 3x + 1/4 cups/day.