Question

find the functions range. enter your answer in interval notation.

Explanation:

Step1: Identify lowest y-value

The open endpoint at the bottom has a y-value of $-15$, which is not included.

Step2: Identify highest y-value

The open endpoint at the top has a y-value of $18$, which is not included.

Step3: Define range interval

The function's y-values lie between these two non-included endpoints.

Answer:

$(-15, 18)$