Question

adriana is flying her drone at an altitude of 300 feet when she decides its time to bring it down. the drone descends at a rate of 10 feet per second and takes 30 seconds to land. the function a(t) represents the altitude, in feet, of adrianas drone t seconds after she begins to bring it down.
what is the domain of a(t)?
all whole numbers less than or equal to 300
all real numbers less than or equal to 300
all whole numbers from 0 to 30
all real numbers from 0 to 30

Explanation:

Step1: Define domain context

The domain of $A(t)$ is valid $t$ (time) values.

Step2: Identify start time

The descent starts at $t=0$ seconds.

Step3: Identify end time

The drone lands at $t=30$ seconds.

Step4: Determine valid time type

Time can take any real value between 0 and 30 (e.g., 2.5 seconds is valid, not just whole numbers).

Answer:

all real numbers from 0 to 30