Answer: Isaiah earned $400.16
Step-by-step explanation:
1. You have that Isaiah earns a weekly salary of $320 and a comission of 3% on all of his sales and the last week this sales were $2,672.
2. Therefore, to solve this problem you must caculate the 3% of $2,672 and add this result to his weekly salary, as following:
[tex](2,672)(0.03)=80.16[/tex] dollars
[tex]320+80.16=400.16[/tex] dollars