Given that:
- She is paid a commission of 7.69% of her first $1600 in sales during the week.
- She is paid 12% on all sales over $1600 in sales during the week.
If she sells $3437.42 worth of windows in a week, you can set up an equation to find her commission (in dollars) in that week.
Notice that:
![3437.42-1600=1837.42](https://img.qammunity.org/2023/formulas/mathematics/college/xesrghqvms4n9jho79vdvi4tl7pkw8cei3.png)
Then, the equation is:
![Comission=(1600)((7.69)/(100))+(1837.42)((12)/(100))](https://img.qammunity.org/2023/formulas/mathematics/college/hpm069y8eok3rgwkwnq7hkrngtj6lzfjbk.png)
Remember that a percent can be converted to a Decimal Number by dividing it by 100.
Therefore, evaluating, you get:
![Comission=(1600)(0.0769)+(1837.42)(0.12)](https://img.qammunity.org/2023/formulas/mathematics/college/r3ggbxn38q9k03wsz2o045r55f0n4961ed.png)
![\begin{gathered} Comission=(1600)(0.0769)+(1837.42)(0.12) \\ \\ Comission=123.04+220.4904 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/rf8vjrdz3187sp3i6yfc4al7n8n2dnbwjr.png)
![\begin{gathered} Comission=343.5304 \\ Comission\approx343.53 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/e3uz9z8ygt28t5s0v21ht9wnve3yvlimsh.png)
Hence, the answer is: $343.53