(F/g)(x)= 3x+8/8x-3/8x/8x-3

Which fraction below is equivalent to 10/12?

How can i differentiate this equation?

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