Answer:
f(-9) = 1
Step-by-step explanation:
f(x) = x/3 + 4 f(-9)
Substitute -9 for x
f(x) = -9/3 +4
f(x) = -3 + 4
Hope this helps :)
i think its 6 may be wrong
f=14/17 or 0.82352941