at the price calculated in Exercise 3 (Cost Estimation Using Graphs; Service) Llanes Advertising Agency is trying to persuade Lopez Cable Company to spend more money on advertising. The agency's argument is that there is a positive linear relationship between advertising and sales in the cable service industry. Ayen Llanes presents these data taken from the accounts of Atimonan Cable Corp. in Quezon, a store similar in size and market share to Lopez Cable Company: Advertising Expense P2,500 3,000 3,500 4,000 4,500 5,000 5,500 Annual Sales P 95,000 110,000 124,000 138,000 143,000 147,000 150,000 Required: 1. Graph annual sales and advertising expense. 2. Do the data prove Ayen's point