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- Solve John's proportion to find how high the ball would bounce if it were dropped from 200 cm.
- Write and solve a proportion to find the height John would have to drop the ball for it to bounce 162 cm.
Method 2. Felicia thought of another method to find how high a ball would bounce if it were dropped from 200 cm. She read on the graph that B = 54 cm when D = 100 cm. Since the variables are in proportion, she knew that doubling D would cause B to double too. Therefore, the bounce height would be B = 2 54 cm = 108 cm.
- Use Felicia's Method to find how high the ball would bounce if it were dropped 400 cm.