To figure this out, you put how much money you changed from then to now as your numerator. So you would have -111 over your original price, which is 240. now, all you have to do is do negative 111÷240 which should be 0.4625. then, to find your percent, all you have to do is move your decimal over to places to the right. 46% decrease!
The function models Exponential Decay due to the fact that as
x -> infinity, y-> 0
The answer to this would be −0.333
All triangles add up to 180 so it’s 20°