Since the cost of the computer is $1999.99 plus 7% tax, then
The total cost of the computer is
[tex]\begin{gathered} C=1999.99+1999.99\times\frac{7}{100} \\ C=2139.9893 \end{gathered}[/tex]Since each installment loan is $203.30 for 12 months, then
The total amount of the loan is
[tex]\begin{gathered} T\mathrm{}L=203.30\times12 \\ T\mathrm{}L=2439.60 \end{gathered}[/tex]The cost of the credit is the difference between them
[tex]\begin{gathered} C\mathrm{}C=2439.60-2139.9893 \\ C\mathrm{}C=299.6107 \end{gathered}[/tex]The cost of the credit is $299.61 to the nearest cent