(1 point) A person is sitting in a silent room listening to a song on their iPhone for 2 minutes, when suddenly their phone shuts off. It takes the person one minute to restart their phone, at which point they resume listening to the song for another minute. a) Assume that the song was playing at a constant intensity level of 55 decibels. Choose the graph below which best represents the decibels of sound present in the room against time (in minutes). (Assume the music is still playing at time t : 2 and the music was not yet playing at time t = 3.) O A. Graph 4 O B. Graph 3 O C. Graph 1 O D. Graph 2 (Click on a graph to enlarge it.) b) Give formulas for the function represented by your graph. t) 2 EEE forO g t g 555 f(t) = 5!! for 5!!