Which function best models the data in the table?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

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

How many degrees are there in the central angles in a circle