Answer
a. Yes, see explanations.
b. $(3,12)$, see explanations.
c. $(0,3)$ and $(12,17)$, see explanations.
d. $(17,30)$, see explanations.
Work Step by Step
a. Yes, using the vertical line test, we can see that for each time value, there is only one corresponding height.
b. The function decreases on $(3,12)$ seconds, indicating that the eagle descended during this time interval.
c. The function is constant on $(0,3)$ and $(12,17)$, indicating that the eagle cruised at a height of 45m during the first time interval and stayed on the ground during the second time interval.
d. The function increases on $(17,30)$ seconds, indicating that the eagle ascended during this time interval.
