Hi there, I hope you understand my answer and that it is correct :)
So, First we multiply $425 by 4 because there are approximately 4 weeks in every month, so as shown
![425*4=1,700](https://img.qammunity.org/2022/formulas/mathematics/college/8w3jnty4xq6hsrixic4lo0vl7hk6p26l8a.png)
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Next We subtract the answer, which we got to be 1,700 from 1266.
![1700 - 1266=434](https://img.qammunity.org/2022/formulas/mathematics/college/iwm4u8rgxkx3bl3pa46fsp6nqtz0uzfsf5.png)
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Answer : $434 left to spend :)