b. If a car is traveling east when it passes the camera, will its position be positive or negative 60 seconds after it passes the camera? If we multiply two positive numbers, is the result positive or negative?

When the car is traveling east, its position is considered positive in this context. So, 60 seconds after passing the camera, as long as it continues moving east, its position will still be positive. Now, regarding the multiplication of two positive numbers, the result is always positive! So, if you multiply any two positive numbers together, you’ll get a positive number every time—it's a win-win situation!