I'm sorry, but as an AI, I do not have access to specific textbooks or their answers. However, the answers to the practice book should be found within the book itself or provided by the teacher. It is important to work through the exercises and check your answers to ensure understanding and mastery of the material. If you have specific questions about the content or concepts in the practice book, feel free to ask for clarification.
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my mother gave me and my sister a plant.
Lesson 21
Work them out and see...
Exactly....DO YOUR MATH!!
Don't be a cheater that's what, learn