Answer-
Felix's total earning is $4740.
Solution-
Felix's fix earning per week = $450
His additional/variable earning = 3% if he sells more than $4800
As Felix’s sales are $53000, so he qualifies for variable pay.
[tex]\text{Felix's total earning} = \text{Net fix earnings + Variable earning}[/tex]
[tex]=(450\times 7)+(53000\times \frac{3}{100})\\\\=3150+1590\\\\=4740[/tex]
Therefore, Felix's total earning is $4740.