Max has a monthly salary of $1,100 and also earns 7.5% commission on his sales. If Max had $43,000 in sales last month, what were his total earnings for the month?

Max’s commission was 7.5% of $43,000: 0.075 × $43,000 = $3,225. Add his $1,100 monthly salary to get total earnings of $3,225 + $1,100 = $4,325. The correct choice is C, $4,325.

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