A plumber has a piece of copper tubing that is 112.8 inches long. He needs to cut the tubing into 12 equal pieces to repair some leaky pipes. How long will each piece of tubing be?

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders

Why is causation so much more difficult to prove than correlation?