Question

a helicopter is flying at an altitude of 7,000 feet when it begins descending towards a landing pad on top of a 500-foot building. the descent takes 10 minutes. the function a(t) represents the altitude of the helicopter, in feet, t minutes into its descent. what is the domain of a(t)? all real numbers from 0 to 7,000 all real numbers from 0 to 10 all real numbers from 0 to 500 all real numbers

Explanation:

The domain of a function represents the valid input values. Here, the input $t$ is the time in minutes since the helicopter began descending. The descent starts at $t=0$ minutes and ends after 10 minutes, so $t$ can only take real number values between 0 and 10, inclusive.

Answer:

all real numbers from 0 to 10