Question

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.

Answer 1

Do your homework by yourself

Answer 2

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.