Zachary is a salesperson who sells computers at an electronics store. He makes a base pay amount each day and then is paid a commission as a percentage of the total
dollar amount the company makes from his sales that day. Let P represent Zachary's
total pay on a day on which he sells x dollars worth of computers. The table below
has select values showing the linear relationship between x and P. Determine the
percentage commission Zachary makes on his daily sales