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20 March, 13:36

Mark recorded the growth of a plant over 8 weeks. The equation y=0.2x+2 represents the height y, in inches, after x weeks.

A.

The height of the plant after week 3 was about 2.6 inches.

B.

The height of the plant after week 3 was about 0.6 inches.

C.

The height of the plant after week 9 was about 3.8 inches.

D.

The height of the plant after week 9 was about 1.8 inches.

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Answers (1)
  1. 20 March, 15:14
    0
    Step-by-step explanation:

    The equation representing the growth of the plant after x weeks is expressed as

    y = 0.2x+2

    Where

    x represents the number of weeks.

    y represents the height of the plant after x weeks in inches.

    A.

    The height of the plant after week 3 was about 2.6 inches. We can check by substituting x = 3 into the equation. It becomes

    y = 0.2 * 3 + 2 = 2 + 0.6 = 2.6 inches. It is correct.

    B is incorrect.

    C.

    The height of the plant after week 9 was about 3.8 inches. We can check by substituting x = 9 into the equation. It becomes

    y = 0.2 * 9 + 2 = 2 + 1.8 = 3.8 inches. It is correct.

    D is incorrect
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