1. Reyes family has P1,500.00 food budget for each member of their family in a month. Express the total food budget (B) as a function of number of family members (n) in one month. 2. A person is earning $750.00 per day to do a certain job. Express the total salary S as a function of the number n of days that the person works. 3. Judy is earning P300.00 per day for cleaning the house of Mrs. Perez and additional $25.00 for an hour of taking care Mrs. Perez's child. Express the total salary(s) of Judy including the time (h) spent for taking care the child. 4. A certain chocolate bar costs P50.00 per piece. However, if you buy more than 5 pieces they will mark down the price to $48.00 per piece. Use a piecewise function to represent the cost in terms of the number of chocolate bars bought.​