Final answer:
The percent discount on the job posting when four jobs are posted is calculated to be 9.09%, which rounds to 9.1% when rounded to the nearest tenth of a percent.
Step-by-step explanation:
To calculate the percent discount given on each job posting, we first need to determine the amount of the discount by subtracting the discounted price from the original price. The original price for posting one job is $495.00, and the discounted price for four jobs is $450.00.
The discount amount is: $495.00 - $450.00 = $45.00.
Next, we find the percent discount by dividing the discount amount by the original price and multiplying by 100 to convert it to a percentage:
Percent Discount = ($45.00 / $495.00) × 100
Percent Discount = 0.0909 × 100
Percent Discount = 9.09%
Rounded to the nearest tenth of a percent, the percent discount is 9.1%.