Answer:
![t = 4x](https://img.qammunity.org/2021/formulas/mathematics/college/eh8q1nj5yggn9h3zl42qxgqemwoeis5ily.png)
Explanation:
We are given that in 1 month, Jessica takes 4 business trips. Take 4 as our coefficient or constant.
Let t be the total number of business trips Jessica has taken.
For 1 month, 4 trips are taken.
For x months, total business trips taken will be expressed as,
![t = 4x](https://img.qammunity.org/2021/formulas/mathematics/college/eh8q1nj5yggn9h3zl42qxgqemwoeis5ily.png)
Let's say for example, we have 5 months in a row, i.e. x = 5. Total business trips taken by Jessica can be gotten by simply plugging in the value of x.
![t = 4(5) = 20 trips](https://img.qammunity.org/2021/formulas/mathematics/college/lg57pbj35rkaeeigjf15lb2asjjaft62vy.png)
In 5 months in a row, Jessica takes 20 business trips.