Suppose that, based on a sample, the 95% confidence interval for the mean of a population is (27, 43). What was the mean of the sample?
A. 35
B. 31
C. 33
D. 37

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?