1. Use Problem Solving Strategies and Models

2. The driving distance between Boston, MA and Cleveland, OH is about 660 miles. If you drive this trip in a total of 12.5 hrs, what is your average speed? d = rt 12.5 12.5 660 = r 12.5 r = 52.8 mi/hr

3. Use the formula P = 2l + 2w for the perimeter of a rectangle to solve the missing variable. P = 100 m, l = 30 m, w = ____. 100 = 2(30) + 2w – 60 – 60 100 = 60 + 2w 40 = 2w w = 20 m P = 2l + 2w 2 2

4. Use the formula P = 2l + 2w for the perimeter of a rectangle to solve the missing variable. P = 10 ft, l = 2 in, w = ____. 120 = 2(2) + 2w – 4 – 4 120 = 4 + 2w 116 = 2w w = 58 in or 4.8 ft P = 2l + 2w 2 2

5. The Perimeter of a triangle is 12. The long side is three times the short side and the middle side is 2 more than the short side. Find the length of each side?

6. A train leaving Kansas City heading towards Phoenix is traveling at 215 mph. At the same time and on the same tracks a train leaves Phoenix heading toward Saint Louis. If there is 1235 miles between Phoenix and Kansas city and 1550 miles between Phoenix and Saint Louis. Approximately where will the survivors be buried when the two trains crash?