Final answer:
To find the total cost after tax for a $629 plane ticket with a 7.5% tax rate, convert the tax rate to a decimal and multiply it by the ticket cost. Add this tax to the original ticket cost and round to the nearest cent, resulting in a final total of $676.18.
Step-by-step explanation:
The question asks us to calculate the total cost of a plane ticket after tax is added. The ticket cost is $629, and the tax rate is 7.5%. To find the total cost after tax, convert the tax rate from a percentage to a decimal by dividing by 100, which gives us 0.075. Then, multiply the ticket cost by the decimal tax rate to find the amount of tax.
Tax amount = $629 × 0.075 = $47.175
To find the total cost after tax, we add the tax amount to the original ticket cost:
Total cost after tax = $629 + $47.175 = $676.175
Now we round the total to the nearest cent, giving us a final total of $676.18.