52 1HI'401 Name APPLICATION [15 marks] *Provide a statement with each solution half-life M(1) = M. !) doubling period N (1 ) = N. (2) compound interest A = P(1+i)" earthquake magnitude M = log loudness of sound L =10log PH of a liquid PH = -log H* A wound, initially with an area of 90cm, heals according to the formula A(t) = 90(10-904), where A(t) is the area of the wound in square cm after t days of healing. In how many days will 70% of the wound be healed? [5] The measure of a conversation in the library is 20dB while students participating in gym class are 2. screaming at 90 dB. How many times more intense is the sound in the gym than the sound in the library? [5] Michelle's parents invest $3500 into an account that pays 4.5%% annually. How long (in years) will it take for the amount to double if interest is compounded quarterly? 3. [5]