For the following story problems: 1st) Define the variable(s) – there will be either 1 or 2 variables 2nd) Write an equation or system of equations 3rd ) Solve and answer the questions using the correct units Two teams of scientists leave a university at the same time and travel in special vans to search for tornados. The first team travels east at 25 mph and the second team travels west at 30 mph. Their radios have a range of 110 miles. How much time will pass before the scientists lose radio contact?

A railway line connects Parnac station with Rougelle station. The distance between these two stations is 150 km. -a train departs from Parnac at 17:10 and stops at Bernouille station at 17:40. Bernern is 60 km from Parnac - He leaves Bernouille twenty minutes later and crosses the Sévillon train station at 18:30. The Sévillon train station is 45 km from Rougelle. He continued his journey at the same speed until Rougelle station. -Another train leaves Rougelle at 17:35 and arrives at Sévillon at 18h. After 10 minutes of waiting he leaves to reach Bernouille at 18:40 and stops 10 minutes. He finally joined Parnac at 19:20. "At what time and how far from Rougelle do the trains intersect?"

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Elena biked x miles, and Noah biked more than that. Problem 10 Write an equation for each situation using a decimal. *Draw a tape diagram to help you reason if needed.