Since every year, the annual salary increases by $4,500, then in the second year the employee earns:
![48000+4500=52500.](https://img.qammunity.org/2023/formulas/mathematics/college/30lsqil8rr9ltoer4mfwy4o2niffyfnpoo.png)
In the third year the employee earns:
![52500+4500=57000.](https://img.qammunity.org/2023/formulas/mathematics/college/zkukye0crxrss1c8ettegmxh7a2hmhf5cb.png)
In the fourth year, the employee earns:
![57000+4500=61500.](https://img.qammunity.org/2023/formulas/mathematics/college/f4ylr9mf6nh816rjhrd1mhc87aggyl8zpr.png)
In the fifth year, the employee earns:
![61500+4500=66000.](https://img.qammunity.org/2023/formulas/mathematics/college/6gyiijl527ox9dvkvnypgog7ey8jwrraik.png)
In the sixth year, the employee earns:
![66000+4500=70500.](https://img.qammunity.org/2023/formulas/mathematics/college/84ad8ly04c6txewsz87zj6opblaztgbiro.png)
![61500+4500=66000.](https://img.qammunity.org/2023/formulas/mathematics/college/6gyiijl527ox9dvkvnypgog7ey8jwrraik.png)
In the seventh year, the employee earns:
![70500+4500=75000.](https://img.qammunity.org/2023/formulas/mathematics/college/u801mtpnsd1v4hwl43a06my0q9ou3wmbq3.png)
Finally, in the eighth year, the employee earns:
![75000+4500=79500.](https://img.qammunity.org/2023/formulas/mathematics/college/2jn593ixt74jywcsgvjm922uu516bnce3s.png)
Therefore, during eight years with the company the employee earned:
![\begin{gathered} 48000+52500+57000+61500+66000+70500+75000+79500 \\ =510000. \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/7hx7q0mxkep319jb4v8r92rzik01ej7bfc.png)
Answer: Third option $510,000.