O negativo da idade de Arnaldo é menor que o negativo da idade de José. O negativo da idade de José é menor que a idade de Francisco. Pode-se afirmar, seguramente, que:

A > J

Step-by-step explanation:

A: Arnaldo's age

J: Jose's age

F: Francisco's age

First statement: -A < -J

if we multiply the inequality, changes the sign of the numers and the direction of the inequality:

(-1)*(-A) > (-1)*(-J) ---> A > J

Second statement: -J < F

Since F has to be ever a positive number, this inequality always satisfies, no mathers what is the value of J.

The, the only one what we can afirm: A > J --> " Arnaldo is older then José"

the range is 19

step-by-step explanation:

the range is biggest number minus the smallest, so in this case it would be

41 - 22 = 19

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step-by-step explanation:

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