Principal, P is $52,000 and A is amount
Duration, n is 18 months and
Interest rate is 8.5%.
![A=P(1+(r)/(12))^n](https://img.qammunity.org/2023/formulas/mathematics/college/mp8h7jincxvyc3q74dptert0ohgvlktntg.png)
![r=(8.5)/(100)=0.085](https://img.qammunity.org/2023/formulas/mathematics/college/b2dnt5zchpgj7d819xzvx42xfmo65fepq8.png)
Substituting the variables into the equation,
![A=52000(1+(0.085)/(12))^(18)](https://img.qammunity.org/2023/formulas/mathematics/college/z80qskdgnjyl8ifsua7dd9mpogbmzauuqa.png)
Since it's a monthly compound interest, you solve annually (for 12 months),
![\begin{gathered} A=52000(1+0.007083)^(18) \\ A=52000(1.007083)^(18)^{} \\ A=52000(1.1355) \\ A=59046 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/iew92vk5pannt7gi9dlvjivpxrlix9f9sa.png)
Since Amount A is $59,046, hence the correct option is C.