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
so whats the answer
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.
I think the answer is a&c
To find the height of the plant after a certain number of weeks using the equation y = 0.2x + 2, you simply need to substitute the value of x (number of weeks) into the equation and solve for y (height in inches).
For example, if you want to find the height after 4 weeks, you would substitute x = 4 into the equation:
y = 0.2(4) + 2
y = 0.8 + 2
y = 2.8
Therefore, after 4 weeks, the height of the plant would be 2.8 inches.
Similarly, you can find the height for any other week by substituting the respective value of x into the equation and solving for y.
y=0.2x+2
to find the height after x weeks, just give a value to x and plug it in. For example, after 2 weeks,
y = 0.2*2 + 2 = 0.4+2 = 2.4
Now plug in 3 and 9 and see which response agrees with your calculation.