3. Consider the function f(x) = -2 log (+) - 1. 3 . State the parent function. [1C] b. Describe, in words, the transformations on the function f(x). [4C] C. Show the calculation for 4 key points (you can use the mapping rule). [4A] 4. The sound level of a BMW M3 Competition's engine starting is 84.2 dB. The noise level of the same BMW M3 Competition driving past a sensor is 94.1 dB. How many times louder is the noise of the BMW driving than the engine starting? Answer to 2 decimal places. [2A]