Isaac works in a department store selling clothing. He makes a guaranteed salary of $400 per week, but is paid a commision on top of his base salary equal to 10% of his
total sales for the week. How much would Isaac make in a week in which he made
$2400 in sales? How much would Isaac make in a week if he made x dollars in sales?
Total earnings when selling $2400:
Total earnings when selling $x:
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attempt 1 out of 3) problem 4 out of max 8