Your dog groomer charges 0 30 per pound plus a 20 appointment fee for any dog that weighs less than or equal to 40 pounds For any additional weight over 40 pounds your groomer charges 0 40 per pound 3x 20 f x 0 x 40 x 40 Find the missing piece for the piecewise function that describes this scenario 4x 20 O 4 x 40 32 4x 4x 32