Using a scale factor, how tall will the actual building be?

Answer:
OPTION C: 105 ft.
Step-by-step explanation:
Note that the width of the building in the map is 3 ft.
The width of the actual building is 45 ft.
That means, the actual building is 15 times more than the map, since, [tex]$ 15 \times 3 = 45 $[/tex].
Therefore, the height of the actual building would be 7 X 15 = 105 ft.
Hence, the height of the actual building is 105 ft. which is OPTION C.