-10 is greater than -10 1/2 by 1/2.
When looking at greater for negatives, the <em>smaller</em> the negative number the greater it is.
So -10 is your answer
hope this helps
$15.99x2 +2.99+3.99= subtotal
subtotal x .089= Tax due
tax due + subtotal = total spent
38.96*.089= 3.46
3.46 +38.96= 42.42744
so altogether with tax, Joseph and Tyler spent $42.43 at the hobby store