Respuesta :

Answer:

$120

Step-by-step explanation:

Zero pair is a pair of numbers whose sum is zero, e.g. +5, -5. Assigning a negative value to expenditures, Ingrid spent money represents $-120. From the definition, it is deduced that $120 make the zero pair in this case. So, she must earn $120.

Answer: The Answer is 120

Step-by-step explanation: Just took the test and got a 100% :)

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