80ft! I might be wrong though
How I did it:
Since there are 5 floors (ground floor included) then that means only 1 floor is 24ft so I multiplied 14 by 4 to get 56 then I added 24 to get 80!
An exponential function is expressed in the form y=axb^x. The relation represents a growth when b>1 and a decay when 0<b<1.
Have a great day! Hope this helps!