Final answer:
The total bill with the pie added is $140.
Step-by-step explanation:
To find the total bill with the pie added, we need to add the cost of the pie to the amount each person paid. If each person paid $9 and Paul added a $5 slice of pie, then the total amount Paul paid is $9 + $5 = $14. Since there are 10 people in total, the total bill with the pie added is $14 x 10 = $140.