A married couple received $$9,000$ of social security benefits.

a$.$ Calculate the taxable amount of those benefits if the couple's provisional income is $$20,000.$

b$.$ Calculate the taxable amount of those benefits if the couple's provisional income is $$37,500.$

c$.$ Calculate the taxable amount of those benefits if the couple's provisional income is $$55,000.$

Answer is complete but not entirely correct.

$\backslash$table$[[,\backslash$table$[[$Taxable$],[$amount of$],[$benefits$]]],[$a$.,$$$,10,000ox$