H(t)=-16t2 +846 + 100

Need so much on this one how many yards?

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

Write 37/22 as a decimal rounded to the nearest hundredth.