Which equation represents the remaining distance, in
miles, to the destination in terms of t, the time, in hours,
since leaving the airport?
o d = 825 - 165t
o d = 825 - 330t
o d = 825 + 165t
o d = 825 + 330t

Here’s more information. The rest of the question says: Daniel is on an airplane flying to a destination 825 miles away. After one hour, the pilot announces that the plane is 495 miles away from its destination airport. In another hour, the pilot announces that the plane will begin its half-hour descent for the final 165 miles.

Yes, it is. You can simply input 4/7 in a calculator to see that the answer is

In other words, the 6-period digits 571428 keep repeating after the decimal point: we write this as