Final answer:
Antonio earned $342 on Wednesday, a total of $1,507.20 for the week, and needs $1,500 in sales to earn a commission of $60.
Step-by-step explanation:
To calculate Antonio's commission on a particular day, you need to multiply his sales for that day by the commission rate of 4%. Let's calculate for each day:
A. Wednesday: Commission = $8,550 * 0.04 = $342. True.
B. Total commission for the week: Commission = ($5,820 + $4,600 + $8,550 + $10,500 + $8,210) * 0.04 = $1,507.20. True.
C. To calculate the sales needed to earn a commission of $60, divide the commission amount by the commission rate: Sales = $60 / 0.04 = $1500. True.