Solving application with inequalities: Nutrition: following the guidelines of the U.S. Department of Agricultu?

solving application with inequalities: Nutrition: following the guidelines of the U.S. Department of Agriculture. Dale tries to eat at least 5 half-cup servings of vegetables each day. for the frist six days of one week. she had 4,6,7,4,6, and 4 servings. how many serving of vegetables should Dale eat on saturday, in order to average at least 5 servings per day for the week?