Answer:
$4
Explanation:
Sylvia: 35.50 + 6*16 = 131.50
Raul: 15.50 + 6*20 = 135.50
135.50 - 131.50 = 4
Flat fee is a one time cost. The hourly rate you have to multiply by the number of hours (6 in this case), and then add them.
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