Answer:
His total income is of $1,371.2.
Step-by-step explanation:
His salary is of $500, plus 8% of his sales.
In this question:
Sales of $10,890. So his salary is given by:
[tex]S = 500 + 0.08*10890 = 500 + 871.2 = 1371.2[/tex]
His total income is of $1,371.2.