Classify the statements based on whether they are represented by +3 or -3. 3°F above 0°F 3°F below 0°F 3 floors below ground level 3 feet above sea level deposit of $3 loss of $3

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