Answer:
28
Step-by-step explanation:
because it's value increases by 28 every month
(f + g)(x) = f(x) + g(x) therefore (f + g)(4) = f(4) + g(4)
it is really cold so people will have to find food try to survive by hunting animals which is even more difficult also plants would barely get any water
18.433333333, please mark brainlest! :)