5(d+4) would be the correct answer.
Answer: Well 2 x 23 = 46, So the 23rd floor
Step-by-step explanation: :)
It helps you narrow down to a smaller answer for example there is pi, (3.14159265359) and there is more and more to that number. It is now estimated to 3.14 because it would be almost impossible to work with pi if it wasn't estimated
