Which of the ordered pairs is a solution to the system of inequalities?

In a column proof the right column states your reasons

What is the graph of the absolute value equation ? y=|x|-5

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad