Question 1020983
I will call money that she owes negative amounts
On the number line, she would be at {{{ -10 - 5 = -15 }}}
noting that she began at {{{ 0 }}}
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Then she pays some of the money back and moves in
the positive direction from {{{ -15 }}}
{{{ -15 + 3.5 + 9.5 = -15 + 13 = -2 }}}
So, she has not made it back to {{{ 0 }}} and still
owes a total of $2.00