Answer:
The maximum value f(4) can have is 70
f(4) = 70
Explanation:
For the largest possible value, the derivative must be greatest,
so, for our case, since f'(x) ≤ 9,
but for largest value, f'(x) must be greatest, hence it must be,
f'(x) = 9.
With this derivative,
Using the value,
f(-3) = 7,
with each step, we increase by 9 units
so, f(-2) = f(-3) + 9 = 7 + 9 = 16
f(-2) = 16
going till f(4),
f(-1) = 16+9
f(-1) = 25
f(0) = 25 + 9 = 34
f(1) = 34 + 9 = 43
f(2) = 43 = 9 = 52
f(3) = 52 + 9 = 61
f(4) = 70
So,
the maximum value f(4) can have is 70