Make X the subject of the formula to the following: 1. Y=x+a
2.y=ax
3.y=x-a
4.y=x-a
5.y=x÷a
6.y=a÷x
7.y=ax+b
8.y=abx

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