the cost of hiring a catering service to serve food a party is P150.00 per head for 20 persons or less P130.00 per head for 21-50 persons an

the cost of hiring a catering service to serve food a party is P150.00 per head for 20 persons or less P130.00 per head for 21-50 persons and P100.00 per head fpr 51 persons or more.Represent the total cost as a piecewise function of the number pf attendees of the party​