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.
Which of the following could be true? Select two answers.
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.

Respuesta :

The statements could be true are:

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

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

Step-by-step explanation:

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

From the equation

  • 0.2 represents the rate of increasing of the height of the plant per week
  • 2 represents the initial height of the plant

∵ y represents the height of the plant after x week

∴ x is the number of the weeks

∵ y = 0.2x + 2

x = 3

- Substitute x in the equation by 3

∴ y = 0.2(3) + 2

∴ y = 0.6 + 2

y = 2.6

∴ The height of the plant after 3 weeks is 2.6 inches

x = 9

- substitute x by 9 in the equation

∴ y = 0.2(9) + 2

∴ y = 1.8 + 2

y = 3.8

∴ The height of the plant after 9 weeks is 3.8 inches

The statements could be true are:

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

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

Learn more:

You can learn more about the linear equations in brainly.com/question/1284310

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