Final answer:
To find the amount of sales tax on Ella's purchase, multiply the total cost of the bracelet and necklace by the sales tax rate.
Step-by-step explanation:
To calculate the amount of sales tax on Ella's purchase, we need to find the total cost of the bracelet and necklace and then multiply it by the sales tax rate.
The total cost of the bracelet and necklace is $14.50 + $22.50 = $37.00.
The sales tax rate is 7.25%, which is equivalent to 0.0725 as a decimal.
To find the amount of sales tax, we multiply the total cost by the sales tax rate: $37.00 x 0.0725 = $2.68.
Therefore, the amount of sales tax on Ella's purchase, rounded to the nearest tenth, is $2.70.