A pottery store charges $10 per mug and sells 40 mugs per month. For each $0.50 decrease in price, the store sells 5 more mugs. What is the maximum monthly profit for mugs when each mug costs $3 to make?

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