Natalie and Bill each improved their yards by planting rosebushes and Geraniums. they brought their supplies from the same store. Natalie spent $150 on 12 rosebushes 6 geraniums. bills spent $90 on 5rosebushes and 5 geraniums. What is the cost of one rose bush and the cost of one geranium?

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?