DRILL Solve the problems below. Write all your solutions 1. A furniture salesman receives a weekly salary of $ 3500 and 5% commission on his weekly sales. Write a rule to described the function f(p) that gives weekly earnings in terms of p pesos in sales. a. b. Find the salesman's earnings for a week with 12 000 total weekly sales? C. What were the salesman's total sales in which his earnings were $ 4250?