Respuesta :

Answer:

it should be 12 to 21 pounds

Step-by-step explanation:

thats if we are starting at 0 boxes if it starts at 1 box then 12 should be 13

mangetsu

Answer:

the range goes from 13 to 21

Step-by-step explanation:

13 because if she is delievering she must have at least a box to deliever

so 12+1= 13 pounds

21 when she delievers all the 9 boxes

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