compounded continuously, approximately what rate of growth will he need to achieve his goal? Is that a reasonable expectation? Why or why not? 2. Sound The formula for measuring sound intensity in decibels D is defined by the 1D = 10log(+), where I is the intensity of the sound, in watts per -12 W square meter, and I = 10 is the lowest level of sound that the average person can hear. What is the intensity of a hair dryer that makes a sound of 90dB? equation m
Fig: 1