Answer:
A. The tree starts at 0 and increases by 1 every year. The height starts at 5 and increases by 1 every year.
Step-by-step explanation: 5 for the first year, 6 for the second year, 7 for the third year etc.
Answer:
all work is shown and pictured
Answer:
is your average rate of change,
Step-by-step explanation:
average rate of change is
, by slope formula
simplify this to get
, which is the definition of the derivative as h goes to 0

since you defined x=a, we can substitute a for x and vice versa to find our derivative.

simplifying
(your average rate of change)
(4x - 8) = 80/2
4x - 8 = 40
4x = 48
x = 12
answer
x = 12