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11 December, 14:06

A sapling that started out 48 inches tall grew 3 inches per year. How old was the sapling when it was 105 inches tall? Write and solve an equation to find the answer.

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  1. 11 December, 14:42
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    Answer: 19 years old

    Explanation: We can use the equation 3x+48=105

    3 is the growth rate/slope, 48 is the initial height/the constant, and x is the age

    Subtracting 48 from both sides leaves us with 3x=57.

    Dividing both sides by 3 gives us x=19.
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