Answer:
1.5 inches
Step-by-step explanation:
This is a table that can be modeled with a linear equation.
Using the slope formula m= (y2-y1)/(x2-x1), and plugging in the first two points of (3,6.75) and (1,3.25), you get a slope of 1.75. Therefore, to find the height of the plant before 1 day of growth, plug in 1.75 as the slope in a linear equation, along with a known point of the line.
y=mx+b
3.25=(1.75)(1)+b
1.5=b, where b is the y-intercept when x equals zero days of growth.
