If 430 letters are delivered on Monday, then what is a reasonable prediction for the number of letters that are delivered to the incorrect location

How many verticies does a triangular prims have

Which expression is equal to (f+g)(x)?

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