Answer:
4 months
Step-by-step explanation:
-Let the number of months it takes for their heights to equal be x and let h(x) be the height after x months.
#For plant 1, we equate height after x months as:

#For plant 2, we equate height after x months and at a constant rate m:

#we equate and solve for rate of growth, m in plant 2 as below:

#We then equate the two heights after x months to solve for x:

Hence, the plants have the same height after 4 months
Yes it is a good line of best fit
Step-by-step explanation:
slope-intercept form : y = mx + b
m = slope
b = y intercept
y = -5x +8
To combine like terms and single out one term to take it easier to solve, the 6x was moved to the other side to combine like terms.
Subtracting 6x from 10x which is 4x