The value in v in hundreds of dollars of juan’s television is approximately v=-0.50t +9 where t is the number of years since he first bought the television graph the equation .
100
1,300
740
500

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?