Final answer:
The price of a hat rising from $9.99 to $12.99 represents a 30% percent change when rounded to the nearest percent.
Step-by-step explanation:
To calculate the percent of change when the price of a hat rises from $9.99 to $12.99, you need to follow these steps:
- Determine the amount of the increase by subtracting the original price from the new price: $12.99 - $9.99 = $3.00.
- Find the percent change by dividing the increase by the original price: $3.00 / $9.99 ≈ 0.3003.
- Convert the decimal to a percentage by multiplying by 100: 0.3003 * 100 ≈ 30.03%.
- Round the percentage to the nearest whole number: Approximately 30%
Therefore, the percent of change in the hat's price, rounded to the nearest percent, is 30%.