In the diagram shown, CD = BC and BC = AB. Choose the reasons that best support the following reasoning used to show that x = 11. 1. CD = BC and BC = AB; therefore, CD = AB 2. CD = AB, AB = x, and CD = 11; therefore, 11 = x 3. 11 = x; therefore, x = 11 A. 1. substitution property 2. transitive property 3. symmetric property B. 1. transitive property 2. substitution property 3. symmetric property C. 1. symmetric property 2. substitution property 3. transitive property D. 1. transitive property 2. symmetric property 3. substitution property

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?