Answer:
<h2>D. 1</h2>
Step-by-step explanation:
To solve this problem, we just need to find the common point of these linear function, beacuse they form a piecewise function which is continuous according to the problem, that means they are related by one common point.
Let's solve the following expression , where and . So,
Which means , that is, if the n is greater than 1, then the function is defined by , if the n is least or equal than 1, then the functioni is defined by
Therefore, the right answer is D.