Question

The height of each story of an office building is feet. The height is measured from the ceiling to the floor. The building has three underground levels for parking. A car is parked two levels below ground. At what elevation are the car’s tires relative to the ground level? Assume the ground level is at zero feet.

Answer 1

the actual height is missing from the problem, but we can still solve this

let's just call the height of each story "x"



notice, how, from the perspective of ground level, the car's tires are 2 levels below the ground. since each level is (x), the distance below ground is 2x.

now, by convention, distances below ground are represented as negative numbers. so by convention, the distance should be -2x.

whatever x is, fill it into -2x and evaluate.