Final answer:
Tyler earned an extra $45 last week by making sales worth $900 at the shoe store, where he earns a 5% commission on his sales.
Step-by-step explanation:
Tyler works in a shoe store and he earns an extra 5% commission on the amount of sales he makes. To calculate Tyler's extra money from sales last week, we need to find 5% of $900. To do this, we convert the percentage to a decimal by dividing it by 100, making it 0.05, and then multiply it by the total sales amount.
So, the calculation would be 0.05 (5% as a decimal) × $900 (total sales) = $45Therefore, Tyler made an extra $45 last week.To calculate the extra money Tyler earned, we can multiply the amount he sold by the percentage he earns.5% of $900 is (5/100) * $900 = $45.Therefore, Tyler earned $45 in extra money.