Final answer:
The Mathematics problem requires understanding of debts and representation on a number line. Starting at +6, Martina pays off each of her three friends $2, moving left on the number line each time, finishing at 0.
Step-by-step explanation:
The subject is a Mathematics problem related to understanding financial transactions and representing them on a number line. Martina has $6 and she owes three friends $2 each. The total amount she owes is $2 times 3 friends, which equals $6. To represent Martina's situation on a number line, we would start at positive 6 (her initial amount) and create three marks moving left (each representing a debt of $2), ending at zero, as she pays off her debts.
This can be visualized as follows:
- Start at +6 on the number line.
- Move left to +4 after paying off the first friend.
- Move left to +2 after paying the second friend.
- Finally, move to 0 after paying the third friend.
The proper number line model would show these steps, with the endpoint at 0, indicating that Martina has paid all her debts and has no money left.