For this case we have the following polynomials:

Adding the polynomials we have:

Rewriting we have:

Therefore, the result of the sum is:

Answer:
the sum of the polynomials is:

option 2
Depend on the time frame, A.M or P.M.
Exponential Function.
Plotting the graph using this table gives the first figure. An exponential function has this kind of graph.
Not for sure but maybe, -0.39285714285 if it’s correct hope it helps!
2/15 + 27/35 = 14+81 /105 = 95/105 = 19/21
so, your answer is 19/21