Marinated Macaroni Salad

Ingredients

• 1 pkg. small seashell macaroni, cooked
• 2 medium green peppers, chopped
• 1 small onion, chopped
• 2 stalks celery, chopped
• 1 large carrot, grated
• 1 can tomato soup
• 2/3 c. vinegar
• 2/3 c. oil
• 2/3 c. sugar
• 1 tsp. salt
• 1/4 tsp. black pepper
• 1/2 tsp. dry mustard