1. Combined Function: \( (f + g)(x) = 5x + 12 \).
2. Evaluation: \( (f + g)(4) = 32 \) represents the total number of animals adopted at both shelters after 4 months.
3. Interpretation: The result signifies the overall impact of both shelters on animal adoptions at the specified time.
Part A: Finding \( (f + g)(x) \)
\[ (f + g)(x) = f(x) + g(x) \]
Substitute the given functions:
\[ (f + g)(x) = (x + 5) + (4x + 7) \]
Combine like terms:
\[ (f + g)(x) = 5x + 12 \]
So, \( (f + g)(x) = 5x + 12 \).
Part B: Evaluating \( (f + g)(4) \)
Substitute \( x = 4 \) into \( (f + g)(x) \):
\[ (f + g)(4) = 5(4) + 12 \]
\[ (f + g)(4) = 20 + 12 \]
\[ (f + g)(4) = 32 \]
Part C: Explanation
\( (f + g)(4) = 32 \) represents the combined number of animals adopted at both shelters after 4 months. Adding the values of \( f(x) \) and \( g(x) \) at this specific time point gives the total number of adoptions. In this scenario, 32 animals were adopted after 4 months when considering both shelters.