Final answer:
Kendra earns $1 per hour from making and selling bracelets; this is calculated by deducting the cost of supplies from her total sales revenue and dividing that profit by the total time spent making the bracelets.
Step-by-step explanation:
To calculate how much Kendra will earn per hour from making and selling bracelets, we must first determine the total earnings from selling the bracelets and then account for the time spent making them.
Kendra makes 4 bracelets and spends $12 on supplies. She sells each bracelet for $5. The total revenue from selling 4 bracelets is 4 bracelets × $5 per bracelet = $20. However, we must subtract the cost of supplies to find the profit: $20 - $12 = $8 profit.
Since it takes Kendra 2 hours to make each bracelet, the total time to make 4 bracelets is 4 bracelets × 2 hours per bracelet = 8 hours. To find how much Kendra earns per hour, we divide her total profit by the total time spent making the bracelets: $8 profit ÷ 8 hours = $1 per hour.