3. A salesperson receives a base salary of P120 000 and a commission of 10% of the total sales for the year. A.) Write a linear model that shows a sales person's total income based on total sales of x pesos, B.) If the salesperson sells P250 000 worth of merchandise, what is her total income for the year, including her base salary? C.)What is the salesperson's total sales if he received a salary of P170,000? ​