What does x stand for in our project?, A. Number of students, B. Number of recycled lights, C. Amount of money, D. Number of books, If one light saves 5 watts, what is the math expression?, A. x + 5, B. 5x, C. x ÷ 5, D. 5 − x, If x = 5, how much energy is saved?, A. 10 watts, C. 25 watts ✅, B. 5 watts, D. 50 watts

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