Janet Terwilliger is a college student and has set a budget of $120 per month for food. She wants to get a certain level of nutritional benefits from the food she has selected to buy. The following table lists the types of food she may buy, along with the nutritional information per serving of that food.

Carbohydrates

Protein

Potassium

Calories

Cost

Pizza

38 g.

10 g.

0

500

$3.99

Tuna

1 g.

13 g.

0

60

1.29

Cereal

35 g.

7 g.

120 mg.

190

0.93

Macaroni & cheese

23 g.

3 g.

110 mg.

110

2.12

Spaghetti

42 g.

8 g.

100 mg.

210

3.42

Recommended daily allowance

50 g.

10 g.

100 mg.

2,000

Write the objective function and constraints to minimize the cost and yet meet the recommended daily nutritional allowances.