Answer:
The number y decreased by 12.
Step-by-step explanation:
Answer:
Height of the light house 
Step-by-step explanation:
Distance of light house from boat = 100 ft
Angle of elevation from boat to the top of light house = 2°
Height above water while taking measurement = 4 ft
The figure of the situation is shown below.
For Δ ABC



Multiplying both sides by 100.


∴ 
Height of the light house 
It would have to be letter D my guy, if you know what centuries and decades are this is easy
How did you put multiple pictures on this app? i can’t figure how to