Respuesta :

$200 = $60 dollars in commission

$400 = $120 dollars in commission

$600 = $180 dollars in commission

$700 = $210 dollars in commission
*since it was only $100 more (which is 1/2 of the $200) then you also cut the commission in half to $30 then add those $30 to the $180 and you get $210

hope this helps :)
The Correct answer is C.210 because you multiply 200×3=600 then subtract 700-600 you get 100 and then 100 is half of 200 so you divide 60 by 2 and you get 30 then from their you add 180+30=210 and your answer is C.210

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