Mackenzie's total earnings when sales is $1700 dollars is $860
The total amount Mackenzie earns in a week is the sum of her base salary and the commission she earns
Mackenzie weekly salary = base salary + commission
$350 + 0.3s
Total weekly earnings when sale is $1700 is :
$350 + 0.3(1700)
$350 + $510
= $860
Total earning is the sum of base pay and the commission she earned. Commission she earned is percentage commission multiplied by total sales
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