Answer:
Option A is correct.
[tex]D(x)=x^2+497x+394[/tex]
Explanations:
Given the following functions based on income generated
Income generated from first job M(x) = 400x + 394
Income generated from the second job A(x)= x^2 + 97x
Calculate the total income;
The total income of the function is the sum of both income functions above as shown:
[tex]\begin{gathered} D(x)=M(x)+A(x) \\ D(x)=400x+394+(x^2+97x) \\ D(x)=x^2+400x+97x+394 \\ D(x)=x^2+497x+394 \end{gathered}[/tex]
This function D(x) gives the resulting function that represent the total income.
