Final answer:
Riley needs to earn $54 to purchase the new jacket, after including the sales tax.
Step-by-step explanation:
To calculate the total amount of money Riley needs to earn, we need to add the sales tax to the cost of the jacket. First, we find the amount of sales tax by multiplying the cost of the jacket ($50) by the sales tax rate (7.25% = 0.0725). The sales tax is $50 * 0.0725 = $3.625. Next, we add the sales tax to the cost of the jacket: $50 + $3.625 = $53.625. Since we need to round to the nearest dollar, Riley needs to earn $54 to purchase the jacket.
Learn more about calculating total cost with sales tax