Question

Schaum earns (x4 + 16x) every month. His wife earns (3x4 + 11x) every month. x represents the number of days they work in a month. What is the total earnings in a month?

Answer 1

1st option: 4x^4 + 27x

Explanation:

We have that the earnings are given by the following functions:

`\begin{gathered} S=x^4+16x \\ \\ W=3x^4+11x \end{gathered}`

If we add we get the following:

`\begin{gathered} S+W=x^4+16x+3x^4+11x \\ \\ S+W=x^4+3x^4+16x+11x \\ \\ S+W=4x^4+27x \end{gathered}`

Therefore, the correct answer is the 1st option: 4x^4 + 27x