Sadie is a salesperson who sells computers at an electronics store. She makes a base pay amount each day and then is paid a commission for every computer sale she makes. Let PP represent Sadie's total pay on a day on which she sells xx computers. The table below has select values showing the linear relationship between xx and P. P. Determine how much money Sadie would be paid on a day in which she sold 3 computers. x P
1 87.50
5 117.50
9 147.50