1,2,3 or 4? and no i can't just guess till i get it right me

The last option would be correct! This is because she reads at least 50 hours a month plus x (the number of days in the month, which varies) so y would be greater than that. But, she could read exactly 50 hours plus exactly the number of days in the month so equal to is also an option here. :)

Your correct answer is option A. f(4) + g(4)

Step-by-step explanation:

Keywords:

Function, sum of functions, properties of functions, real numbers

For this case we have a sum of functions that we must represent in an equivalent way. For this we take into account that by definition, the sum of functions property establishes that:

The function is defined in the set B, (Being B belonging to the real numbers) as:

for all x belonging to set B.

tht gives you your answer of option A. f(4) + g(4)