Answer:
I think its 21 im not sure tho! Sorry if im wrong! :(
Step-by-step explanation:
y = 0.5x + 2
My graph looks like this:
y = 0.75x + 2 ft
x = 24 yrs
slope is (9/12) = 0.75 ft/yr
Y intercept is original height of tree 5 - 4(0.75) = 2 ft
y = 0.75x + 2
20 = 0.75x + 2
18 = 0.75x
